Download a picture on Baidu first, it's about Ciro, but it's up to you to choose what style. After that, go to the Baidu "Personal Center" created by yourself. There is the word "Settings" at the top, click it, and then there is the column of "avatar modification" on the left, click it.

Click "Browse" in the last part, then find the location where your pictures are saved, and everything will be OK!