What did the Qing Dynasty publish as an introductory model for people to learn to copy painting?

Mustard Seed Garden, a masterpiece of sunflower in Chinese painting, is a must-read for modern Chinese painting masters. Qi Baishi first saw this book in someone else's house. He can't sleep at night. He borrowed and described it. Later, he got the book. He couldn't put it down and longed for it. On this basis, he was inclusive, formed his own family, and finally embarked on the road of master. Others, such as Huang, Fu Baoshi, Zhang Daqian, Pan Tianshou, Li Keran, Liu Haisu, etc. all benefited a lot from Mustard Garden, which shows the great influence of the book.