Which master first proposed "painting and calligraphy are homologous"?

There were many painters and calligraphers in ancient China, all of whom acknowledged that "painting and calligraphy are of the same origin".

Zhao Mengfu, a great painter and calligrapher in Yuan Dynasty, first discovered this truth. He inscribed a poem on a famous painting handed down from ancient times: white as a fly, white as a pen,

There are also eight skills to write bamboo.

If anyone can be here,

You should know that calligraphy and painting are the same.

Here, Zhao Mengfu emphasized that China's painting should replace "description" with "writing" and draw with calligraphy.

Zhang Yanyuan's "History of Famous Paintings, Narrating the Origin of Paintings" in the Tang Dynasty said: "You have four eyes, you look up and you bow your head. Because the traces of birds and turtles determine the shape of the characters, it is naturally impossible to hide its secrets, so it rained heavily; Ghosts can't hide from shapes, so ghosts cry at night. At the right time, calligraphy and painting are the same, without division, just like the beginning of the elephant system. There is no way to convey its meaning, so there are books; There is no way to see its shape, so there are paintings. "

This is the earliest theory of "painting and calligraphy in the same body"