Legal analysis: 1. First, state the information of the person using the portrait and the person authorizing the portrait. 2. In accordance with the relevant provisions of the Advertising Law of the People's Republic of China and the Civil Code of the People's Republic of China, and in order to clarify the obligations and rights of both parties, the following agreement has been reached through friendly consultations. 3. Explain the content of the agreement: the period of use of the portrait, etc. 4. Ending: signed and sealed by both parties to take effect.

Legal basis: Article 490 of the "People's Republic of China and Civil Code" Where the parties conclude a contract in the form of a contract, the contract is established when both parties sign, seal or fingerprint. Before signing, sealing or fingerprinting, one party has performed its main obligations and the contract is established when the other party accepts it. Laws and administrative regulations stipulate or the parties agree that a contract should be concluded in writing. If the parties have not done so in writing but have performed their main obligations and the other party has accepted it, the contract is established.