Xiaohongshu has to wait seven days to change his avatar and reset it. Xiaohongshu can only change his avatar three times in seven days, suggesting that he has to wait seven days, because the user has used up three opportunities. At this time, there is no way to operate except to wait for the replacement after seven days. In the Xiaohongshu community, users recorded the positive energy and beautiful life of young people in this era through the sharing of words, pictures and video notes. Xiaohongshu accurately and efficiently matches massive information and people through machine learning.