Legal analysis: the contract is valid only if it is signed without fingerprints. A legally established contract shall take effect upon its establishment. As long as the parties have the corresponding ability to conclude a contract, the intention is true, and the contract does not violate the law and social public interests. This contract shall come into force after being signed or sealed by both parties.

Legal basis: Article 464 of the Civil Code of People's Republic of China (PRC). A contract is an agreement between civil subjects to establish, change and terminate a civil legal relationship. Agreements on status relations such as marriage, adoption and guardianship shall be governed by legal provisions on such status relations; If there are no provisions, the provisions of this part can be applied according to their nature.