Welcome to Dongyu. Thanks for using Dongyu’s products and services. To ensure a safe non-offensive environment for all of our users we have established these Terms of Service, which explain the rules of use for our site. By accessing any area of Dongyu, users agree to be legally bound and to abide by Terms of Service set forth below.
Copyright and Permissions
Copyright in all content on this site is owned by Dongyu. No materials on this site may be reproduced, stored, altered or further distributed without our prior written permission.
Dongyu does not monitor all activity on this site but reserves the right to do so.
Users are prohibited from violating or attempting to violate the security measures on this site, including, without limitation:
Using a false account or password or one belonging to another user or accessing data not intended for the user or logging into a server or account which such user is not authorized to access;
Disclosing a password or permitting a third party to use a password or failing to notify Dongyu if a password is compromised;
Attempting to probe, scan or test the vulnerability of the system or network or to breach security or authentication measures without proper authorization;
Attempting to interfere with service to any user, host or network, including, without limitation, via means of overloading, "flooding," "mail bombing" or "crashing";
Sending unsolicited E-mail, including promotions and/or advertising of products or service;
Forging any TCP/IP packet header or any part of the header information in any E-mail or newsgroup posting;
Hijacking all or any part of the site content, deleting or changing any site content, or linking to the site without our express written permission.
Users agree to use Dongyu only for lawful purposes. Users may not use this site to transmit, distribute, store or destroy material (a) in violation of any applicable law or regulation, (b) in a manner that will infringe on the copyright, patent, trademark, trade secret or other intellectual property rights of others or violate the privacy or publicity or other personal rights of others, or (c) that is libelous, obscene, offensive, threatening, defamatory, abusive or hateful.
Dongyu has absolute discretion to determine if any use violates these rules, and to act as it deems appropriate in the event of any violation. Violations of system or network security may result in civil or criminal liability. Dongyu will investigate occurrences which may involve such violations and may involve, cooperate with, and make disclosures to, law enforcement authorities in identifying and prosecuting users who are involved in such violations.
Dongyu's policy is not to accept or consider any unsolicited ideas or materials of any kind. Do NOT submit any such materials. If you violate this prohibition, Dongyu reserves the right to consider all materials submitted as non-confidential and free of any claims of proprietary or personal rights. Such material and all rights will be considered property of Dongyu, free and clear of any claims by you or others, and available for use by Dongyu for any purpose, including advertising and promotion, without compensation or any other obligations to anyone, including you.
It is strictly prohibited to use or contact this site to disrupt or damage the site, its contents or its security measures or to harass or disparage Dongyu or its products or service or personnel. No unsolicited E-mail (spam) may be directed to or through this site.
Purchased lessons are non-transferable and may not be sold or bartered.
Money-back Guarantee: 7-day Money-Back Guarantee.
If you are not satisfied with our service within 7 days after your payment, contact us and we will issue a full refund.