there is a penalty of 51,111 yuan for breaking the promise. Zhenai is a blind date website provided by a professional matchmaker, with an original efficient marriage service mode of "online recruitment+artificial matchmaker". The content of the single commitment letter is that the promise is single, and there will be 51,111 liquidated damages for violating the promise. Zhenai is operated by Shenzhen zhenai Information Technology Co., Ltd., and its headquarters is in Shenzhen Aerospace Science and Technology Plaza.