Every time I leave, I always meet something white, okay?

This is not necessarily necessary. It needs to be discussed in different situations. If you meet something white, you must walk behind the white team, which means it is not only harmless to yourself, but also beneficial. On the contrary, when you meet happy things, you must walk in front of the team, which means that nothing is absolutely good or absolutely bad, depending on how you use it. Are you right? Please accept it, thank you!