This article about Lu Xun's "From a Herb Garden to a Three-Pond Moon" is in Morning Flowers. He expressed the author's longing for a beautiful childhood.

Yes, the life in Baicaoyuan is leisurely. He can put Polygonum multiflorum and observe all kinds of bugs ... this is childish and brilliant!

But also, the life of San Tan Yin Yue is leisurely-because there is a garden behind San Tan Yin Yue, Lu Xun can have a good time.

This is also a link that can reflect the author's central idea.

So the central idea of the article is:

It embodies children's love for nature and pursuit of knowledge. Expressed the author's longing for the carefree life of childhood.