Mogu

[1] In these paintings, forms are made by ink and color washes rather than by outlines.

[citation needed] During the period of the Five Dynasties and Ten Kingdoms period, a painter named Huang Quan (黄筌) from Former Shu significantly developed the techniques in bird-and-flower painting, especially in painting trees and flowers, and his painting was called as the fine-sounding name Mogu Huazhi (沒骨花枝).

[citation needed] During the Tang dynasty, notable painters mastered this technique includes Yang Sheng (楊升).

Xu Chongsi (徐崇嗣) during the Northern Song dynasty continued developing the technique from Huang, and his paintings were named Mogu-Tu (沒骨圖).

Less or absolutely no sketch or drawing, so people can hardly observe solid lines or curves in the painting.