What is the summer after a dream of red mansions?

In A Dream of Red Mansions, mango festival is summer.

In the 27th chapter of A Dream of Red Mansions, the scene of offering sacrifices to the goddess of flowers with mango seeds is described, in which it is mentioned that "it will be summer after mango seeds are planted". This shows that summer is after the Miscanthus Festival. This description reflects the changes of solar terms in the ancient Chinese calendar in China, and the awn seed is one of the 24 solar terms, which marks the official start of summer. This plot shows the vivid description of natural scenery and seasonal changes in A Dream of Red Mansions.