Use the picture in Baidu Post Bar as the signature file. You must open the picture and right-click the copy address before you can use it.
Use the pictures in Baidu Space/Baidu Cloud/Baidu Album as signature files. First, the picture should be set for everyone to see. Second, you have to open the picture and right-click to copy the address. You cannot copy the address directly in the picture list. Correct operation. Let's see if the copied picture address is http:// letters. Is hiphotos or picphotos behind? If the direction is behind, the address is wrong. If it is picphotos, it must be changed to hiphotos to be used as a signature file.