The founder of one painting and two states.

Niu Han. According to the data of a painting's duality, as of June 8, 2022 10, the duality of a painting is also called bicolor, which is a calligraphy style originally created by Niu Zhanwenhan, formerly known as Niu Wenzhan (Deputy Secretary-General of Beijing Canal Painting and Calligraphy Institute) and under the pen name Yan Niu. He was originally from Shandong and now lives in Beijing.