What books are there to interpret A Dream of Red Mansions?

By the way, there are also meritorious deeds.

Speaking of the red chamber,

Lu Xun on the Red Chamber,

Hu Shi and A Dream of Red Mansions,

Zhu Zhu wrote "A Dream of Red Mansions".

History of Ancient Chinese Literature, by You Guoen.

History of ancient Chinese literature, by Yuan Xingpei.

The lectures in Lecture Room Week are good, so you don't have to watch Liu's lectures.