Clear Huang Ting's Internal Classic, the book of health preservation. The author and writing date need to be verified. All the classics are seven-character poems with 239 sentences, which are divided into 36 chapters. Each chapter takes the first sentence as the title and tells the principle of health preservation in the form of seven-character songs.

There are some similarities.

Poetry pursues Shirakawa and style, while books imitate the interior of Huang Ting.

Poetry imitates Shirakawa's original style, and calligraphy studies the interior of Huangting.

Both are masterpieces, which is a compliment.