Why did Professor Tian's 28 nannies leave Xiaoguan?

Twenty-eight nannies of Professor Tian's family were found stealing and left. Twenty-eight nannies in Professor Tian's family: episode 34: Professor Tian's family went out for a trip. Xiao Guan saw that the jewelry at home was wicked. Unfortunately, Professor Tian, who went home to pick up his luggage, found that Xiao Guan couldn't stand the pressure and quit. Xiao Guan is a character in the TV series "Twenty-eight Nannies of Professor Tian's Family" adapted from Wang Xiaoyu's novel.