How to clear the nickname of qq flying car? Can pet nicknames use special symbols?

Pet nicknames can be used for flying cars. The nickname space is displayed when the map is run. When you look up your information in your room or someone else's, you will see the nickname of word of mouth. The way to blank is to enter a'' with abc input method, and then press Enter twice to turn to the last page. You can choose any one with three spaces.