QQ Doctor Reappears with a New Name: Is it a "Housekeeper" or a Nuisance?

After being criticized by some Internet users as the "King of Imitation", Tencent has encountered another issue recently. Since the Mid-Autumn Festival, some people have reported that an icon of "QQ PC Manager" appeared on their desktops for no reason and it would automatically run with the system startup. The most frightening thing is that they had never installed such software, so how did it appear?