### "FLYINSONO" User Agreement

Welcome to the "FLYINSONO" platform (hereinafter referred to as "FLYINSONO" or "the Platform") services, in order to protect the rights of users, before they register on the Platform, users should read the "FLYINSONO" User Agreement (hereinafter referred to as "the Agreement") in detail, (especially the clauses in bold that limit or exclude liability or other clauses that involve your significant rights and interests. (In particular, the terms and conditions that limit or exclude liability or involve your significant rights and interests may be bolded or underlined) and fully understand the terms of this Agreement. The user should read carefully the terms and conditions of this Agreement that relate to the exclusion or limitation of liability, the application of law and dispute resolution, especially the bolded parts of this Agreement, and if in doubt, please consult customer service in a timely manner. Users who choose to "click to agree" to this agreement or otherwise begin to use the platform are deemed to have read and agreed to sign this agreement. Unless you have read, fully understand and accept all the terms of this agreement, otherwise you do not have the right to use the services provided by the platform.

1 Conclusion of the Agreement

1.1 The "FLYINSONO" platform is a medical online learning and training service platform developed and operated by VINNO Technology (Suzhou) Co., Ltd (hereinafter referred to as "VINNO Technology"), and the ownership and operation of the electronic services of this platform shall be owned by VINNO Technology.

1.2 This Agreement is provided by VINNO Technology, and the parties to this Agreement (also referred to as "Users") shall be natural persons, legal persons or other organizations with full civil capacity. The purpose of this Agreement is to agree on the rights and obligations between VINNO Technology and the User, and it shall be equally valid for both parties.

1.3 This Agreement consists of the main text, other agreements referenced in this Agreement, and supplementary agreements, and the other agreements and supplementary agreements referenced in this Agreement have the same legal effect as this Agreement. VINNO Technology has the right to modify and improve this Agreement in accordance with legal regulations and reasonable needs of operation, and to publish it on the platform website (http://www. flyinsono.com). flyinsono.com/) and mobile app. By continuing to use the Platform, the user agrees and voluntarily complies with the terms of the modified agreement, otherwise the use shall be terminated.

2 Definitions

2.1 "FLYINSONO": It is a professional tool for ultrasound doctors that integrates socialization and learning. By deeply integrating with ultrasound machine, it provides a platform for doctors and experts to communicate and learn.

2.2 "User": is the user of this platform, the relative party of this agreement, generally hospital doctors, medical students, university professors or other related professionals, etc.

2.3 "Courses": are medical teaching, seminar videos and other related videos produced by course developers and uploaded to this platform by VINNO Technology. According to the format of the courses, they can be divided into live courses and other courses. Live courses are in the form of real-time live streaming and are taught by course developers to users in real time; other courses exist on this platform in the form of videos, text, pictures or links.

3 Software acquisition

3.1 [Software Acquisition] Users can obtain the installed software of the Platform directly from the website operated by VINNO Technology, or from other third parties authorized by VINNO Technology.

3.2 [Third Party Channels] If the user obtains the installation software of the Platform from other third party channels, any damage caused to the user due to software problems has nothing to do with VINNO Technology and VINNO Technology is not responsible for it.

4 Account Registration and Personal Information Protection

4.1 [User Registration] Users become users of the Platform when they register in accordance with the rules and procedures announced and prompted by the Platform, read and agree to this Agreement, complete the entire operation process, and successfully register for an account on the Platform, which requires the binding of a valid cell phone number.

4.2 [Account Protection] The user's account and password in this platform are set by the user, VINNO Technology will not ask for the user's account or password in any form.

4.3 [True Information] In the process of account registration, VINNO Technology may require users to provide the necessary personal information (including but not limited to contact information, e-mail address, etc.), users should follow the prompts on the platform page, complete, accurate and true to fill out, any use of incomplete, inaccurate, untrue information for registration and the adverse consequences caused by the user himself bear.

4.4 [Personal Information Maintenance] Users shall update and maintain their personal information, especially contact information, in a timely manner, and shall bear the adverse consequences caused by any errors in the relevant information.

4.5 The User's account is for the User's personal use only, and the User is solely responsible for all actions on his or her account, and all consequences resulting from the User's direct or indirect permission for others to use the User's account shall be borne by the User. If the user's account is leaked due to the user's own reasons and the damage caused to the user or others, the user shall bear the responsibility; the user may defend his legal rights through other legitimate means, but VINNO Technology shall not bear any responsibility.

4.6 [Privacy Protection] VINNO Technology will properly protect the personal information disclosed by the user during the registration process, and will not disclose or reveal the user's personal information to any other third party without the user's permission, except with the user's authorized permission and as otherwise provided by laws and regulations.

5 The platform service content and precautions

5.1 [Service Content] The Platform provides the following services to the User, including but not limited to.

1) Instant messaging service.

2) Online training services.

3) Other services provided by the Platform.

The above services are limited to the use of the Platform, the act of divesting them from the Platform by any means is improper, the divested services cannot be considered as provided by the Platform, all legal responsibilities arising from the divestiture of the relevant services or the use of the divested services shall be borne by the perpetrator, VINNO Technology is not responsible for this, and reserves the right to pursue the legal responsibility of the perpetrator The following is a summary of the information provided by VINNO Technology.

5.2 [Platform Notification] When VINNO Technology deems necessary, it will send information to users through their live chat, cell phone text messages, emails, and messages within the platform, including but not limited to: notification of class start, notification of class start time adjustment, course promotion, etc.

5.3 [Platform Tools] In order to provide users with more, better and more accurate services, the Platform may recommend users to install other software or plug-ins, and it is up to the users to decide whether to install them or not. The platform will also provide some auxiliary tools, the auxiliary tools and their obtained results are for the user's reference or assistance, to facilitate demonstration, learning, analysis, use, etc.

5.4 [Supplementary Agreements] When using some services in the Platform, users may be associated with other separate agreements, users should read the relevant agreements carefully before using these services and use them only after fully understanding them. Once the user uses the above services, the user is deemed to accept the separate agreement.

6 User Code of Conduct

6.1 [Guidelines Overview] When using the services provided by this platform, users shall comply with the relevant national laws and regulations, shall follow the relevant provisions of this agreement, and shall not use this platform to do acts that violate laws and regulations and public morals.

6.2 [Prohibited Actions] Users should pay attention to the content published in this platform in the process of using the services of this platform and shall not.

1) Publish remarks or pictures that endanger national security, disclose state secrets, subvert state power, or undermine national unity.

2) Publish statements or pictures that incite ethnic discrimination and undermine unity and solidarity.

3) Publish statements or pictures that undermine the state's religious policy and promote evil cults and feudal superstitions.

4) Publishing vulgar and indecent remarks or pictures.

5) Publishing false information, concealing the truth in order to mislead or deceive others remarks or pictures.

6) Impersonating others, using the names of others.

7) Publishing remarks or pictures that reveal others' privacy or involve others' personal information.

8) Publishing defamatory or insulting remarks or pictures that violate the legal rights of others.

9) Publishing statements or pictures that violate the legal rights of others, such as portrait rights, reputation rights, honor rights, intellectual property rights, etc.

10) Other acts that violate public order and morals, laws and regulations.

6.3 [Account specification] This platform is a network platform for users to exchange professional skills, the account name registered by the user should comply with basic social norms and good customs, should not use indecent words or inappropriate words or letters as the account name or use indecent pictures as avatars.

6.4 [Commitment to non-infringement] Users shall respect the legal rights of VINNO Technology and others, and shall not infringe the legal rights of others in any way during the use of the Platform.

6.5 [Prohibition of Reverse Engineering] Users shall use the Platform legally, and any reverse engineering, reverse assembly, reverse compilation or other illegal access to the source code of the Platform software is prohibited.

6.6 [Enforcement Measures] If a user violates the above terms of the User Code of Conduct or if his or her actions on the Platform have caused/are causing/may cause damage to VINNO Technology or other third parties, VINNO Technology has the right to take the following measures against the user, as appropriate, without any liability.

1) To require the user to return the proceeds obtained from his improper actions.

2) to cancel the user's right to continue using the service in question

3) Restricting, freezing or forcibly canceling the user's account.

4) Other remedies that do not violate the laws and administrative regulations.

7 Declaration of Intellectual Property Rights

7.1 VINNO Technology is the owner of the intellectual property rights of the Platform, and all intellectual property rights of the Platform (including but not limited to copyrights, trademarks, patents, trade secrets, etc.) shall be enjoyed by VINNO Technology, except for the rights that shall be enjoyed by others according to the law or the agreement between VINNO Technology and others.

7.2 The copyright of the courses on the Platform shall be enjoyed by the course developers, and VINNO Technology shall have the right to be licensed to upload, use, disseminate on the information network, and close the courses in accordance with the agreement with the course developers.

7.3 The ownership and intellectual property rights of the data generated by the user in the course of using the services of the Platform belong to VINNO Technology.

7.4 Users who, in the course of using the services of this platform, find that the content of the relevant courses of this platform is suspected of infringing the intellectual property rights of others, shall promptly inform VINNO Technology.

7.5 Without the express consent of VINNO Technology or the course developer, the user shall not modify, adapt, translate, copy, record, disseminate, or distribute the relevant courses, and any damage caused to VINNO Technology or the course developer as a result shall be borne by the perpetrator.

8 Disclaimer

8.1 Users should understand that the information network services are not provided by VINNO Technology and therefore VINNO Technology does not assume any legal responsibility if the platform services are not satisfactory to the user due to network reasons.

8.2 VINNO Technology shall not be liable for any damage caused to the User by force majeure or for reasons beyond VINNO Technology's control, and VINNO Technology shall endeavor to minimize the User's damage within the limits of its ability. Force majeure referred to in this agreement includes, but is not limited to, acts of God, changes in laws and regulations or governmental directives, causes unique to the characteristics of the network service, such as the failure of domestic or foreign basic telecommunications carriers, computer or Internet-related technical defects, Internet coverage restrictions, computer viruses, hacker attacks, and other objective circumstances that cannot be foreseen, avoided and overcome within the scope of legality.

8.3 In order to provide a better service, VINNO Technology will update or maintain the Platform software from time to time on its own, and we hope that users will understand and tolerate to a certain extent the inconvenience caused by this.

8.4 The courses and comments posted by users or course developers on this platform do not represent the views or positions of VINNO Technology, and VINNO Technology does not assume any responsibility for them. If the aforementioned content violates the rights of others, the user or course developer who posted it shall be responsible for it, and VINNO Technology shall not be liable for it.

8.5 If the user has a dispute with the course developer over the content of the course, the user and the course developer shall resolve the dispute themselves and VINNO Technology shall not be held responsible.

8.6 The installation of third-party software or plug-ins is at the user's discretion, and the user shall claim damages from the provider of such software or plug-ins for any damage caused by the user's installation of third-party software or plug-ins, and VINNO Technology shall not be held liable.

8.7 VINNO Technology may choose to discontinue some or all of the services of the Platform in accordance with its business strategy. If this happens, VINNO Technology will notify the user in an appropriate manner and within an appropriate timeframe, and the user should preserve as much of the content as possible during this period as long as it does not infringe the legal rights of VINNO Technology and others.

9 Other

9.1 [Application of Law] The laws of the mainland of the People's Republic of China shall apply to the establishment, validity, performance, interpretation and dispute resolution of this Agreement.

9.2 [Integrity of Agreement] If any part of this Agreement is invalid or unenforceable for any reason, it shall not affect the validity of other provisions.

9.3 [Dispute Resolution] Any dispute arising out of or in connection with this Agreement shall be submitted to the Suzhou Arbitration Commission for arbitration in accordance with the arbitration rules of the Commission in effect at the time of application for arbitration, and shall be heard by three arbitrators. The arbitral award shall be final and binding on both parties.

9.4 [Language] If there are multiple language versions of this Agreement, the Chinese version shall prevail.