Legal analysis: The purpose of signing is to prevent disputes and prove that the signing of the agreement is a true expression of will. If the signature and handprint are combined, in many cases, in order to prevent disputes between the two parties on key figures, dates and other important information in the agreement in the future, both parties will choose to press handprints at key positions in the agreement to show their approval of the content.

Legal basis: Article 490 of the Civil Code of People's Republic of China (PRC). If the parties enter into a contract in the form of a contract, the contract shall be established when the parties sign, seal or press their fingerprints. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.