Add the other person as a friend and ask for the information you need. You can also search QQ number in the browser to see if you can find information.
The role of QQ:
QQ number can be used to view chat records, virtual assets, QQ coins, Tenpay balance, wealth management products, QQ number can be used to view QQ space, and you can also find people through QQ.
Moreover, QQ also has the function of chatting, which can enhance people's feelings, and can also conduct video chat and voice chat. Moreover, QQ also has the function of transmission, which can transmit files or software without traffic or downloading other software, establish group chat through QQ, and invite people who are not friends to join the chat.