Legal analysis: 1, public awareness of the trademark; 2. Duration of trademark use; 3. The duration, degree and geographical scope of any publicity work of the trademark; 4, the trademark as a well-known trademark protection record; 5. Other factors that make the trademark famous.

Legal basis: Article 14 of the Trademark Law of People's Republic of China (PRC) shall, at the request of the parties concerned, identify well-known trademarks as facts that need to be identified in handling trademark cases. The following factors shall be considered when identifying well-known trademarks:

(a) the public's awareness of the trademark;

(2) the term of use of the trademark;

(3) the duration, degree and geographical scope of any publicity work of the trademark;

(4) The record that the trademark is protected as a well-known trademark;

(5) Other factors that make the trademark famous.