Find the privacy setting in your profile, and then find the anti-harassment setting, which does not accept any temporary conversation messages. Also, after adding him as a friend, drag him into the blacklist and delete him.

Ma Yun founded the website 1688 in the predecessor of Alibaba 1999. 1688 is now the flagship business of Ali Group and the leading domestic e-commerce platform for small enterprises. 1688, as a subsidiary of Ali Group, represents the interests of enterprises in the CBBS e-commerce system, provides business opportunity information and convenient and secure online transactions for tens of millions of buyers and suppliers around the world, and is also a real interactive community where businessmen and chambers of commerce are friends.