低头看到了容嬷嬷抬头看到了班主任
[dī tóu kàn dào le róng mā mā tái tóu kàn dào le bān zhŭ rèn]
Here '容嬷嬷' (Rong Mumu) comes from a popular TV series about empresses in ancient China. She is usually seen as severe while the class teacher in school ('班主任' - homeroom teacher) represents discipline in school context; This internet moniker expresses an ironic feeling of being suppressed by authoritative figures at all times whether you are an ordinary student or an empress in a drama.