First of all, you need to know the name or Duoduo number of your friend, click "Friends" in the lower right corner, then there is a " " symbol on the friend list interface, click it, and then there are two ways to search. Let you choose, you can choose whatever you know. Generally, Duoduo is more accurate, because the name of Oya may be in Martian script or other characters, which is difficult to find. If the other person agrees to add him as a friend, you can chat. I hope LZ finds your Oya friend.