Riding a bamboo horse, having sex with childhood, shyly snuggling up by the lake. Riddle (solar terms)

The answer is Xiao Man, who said it was wrong.

Reason: The first two sentences refer to childhood friends, that is, the word "Xiao" was locked when I was a child.

Lakeside = three points of water, ashamed to buckle grass (metonymy in riddle), snuggling = two.

Three drops of water+grass+two = full.

So the answer is Xiaoman, exactly.