The signature of both parties to the handwritten agreement, if established according to law, has legal effect. The handwritten agreement is in written form, and the contract is established when signed by all parties. The parties to a contract have corresponding capacity for civil conduct, their intentions are true, they are legally established and do not violate public order and good customs, and they have legal effect.

Legal objectivity:

Article 143 of the Civil Law of People's Republic of China (PRC) is valid if a civil juristic act meets the following conditions: (1) The actor has corresponding capacity for civil conduct; (2) the meaning is true; (three) does not violate the mandatory provisions of laws and administrative regulations, and does not violate public order and good customs. Article 490 of the Civil Code of People's Republic of China (PRC): If the parties conclude a contract in the form of a contract, the contract is concluded when the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it. A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.