The Qiong Pavilion where Gu Chaoyan lived was the only place that did not get updated when the whole mansion went through renovation years back. No one from the Gu Mansion was asked to do any cleaning of that place either.
Qing was a capable maid, of course, but she was too young to take care of everything. What she had been doing was to make sure Gu Chaoyan ate, lived, dressed and travelled well.
Even at this moment, Gu Chaoyan was still forced to live at the Qiong Pavilion. If the news was known to others, Gu Zhenkang might be considered to have mistreated his own daughter. The Gu Mansion was no longer as minor as before, and more and more people were focusing upon them now. He was going to become Lord Ling's father-in-law soon, so he should not cause a rumor for Lord Ling.