I don’t know Chinese or the android version very well but I can clearly see that he started in the menu. If he were to click the continue button it would of took him to his most recent checkpoint but it did not so therefor he started from his level selection. Also dude it’s a 8th place run I’m sure it doesn’t matter that much also read the rules before you submit a run to avoid this issue.

I think the fastest way for beginners is after you open the lock is to go left and use the window to climb across and open the door.