Well, although Cao Xuanbin is not very famous, at least people have been mixing around for so long and created many famous songs, such as It's a pity that it's not you, Hands and feet, Love in the heart, We are all the same, and so on. See Baidu Encyclopedia. Besides, if people insist on propaganda, they must add a more domineering title, so don't dwell on this issue, and Cao Xuanbin didn't add it to themselves.