班主任就是容嬷嬷的的后代
[bān zhŭ rèn jiù shì róng mā mā de de hòu dài]
This is rather an interesting phrase. The Chinese word for class teacher (班主任) at schools and Nanny Rong - the old nanny who has strict requirement for her granddaughter in a famous Chinese TV series named Palace Dramas. This username intends to make fun of his/her own teacher who shares characteristics with Nanny Rong. The name could imply that the class teacher might have an image of being extremely harsh and unkindly, always finding faults as was described in the show. And she/ he seems quite unsatisfiable in most occasions just like Nanny Rong.