Divorced. Is it illegal not to return to your ex-husband WeChat?

It's your right not to reply to messages. But for the sake of the children, I suggest you communicate with your ex-husband. Although divorced, he is still the child's parents. It may be better for children if they can get along in a relatively friendly way.

Divorce refers to the legal act that both husband and wife dissolve their marriage relationship and terminate their rights and obligations through agreement or litigation.