Bai Yuchan (1194-1229) was a Taoist in the Southern Song Dynasty. His original name was Ge Changgeng, and his courtesy name was Yiyue. His nicknames were Bin'an, Hai Qiongzi, and Wuyi Sanren. His ancestral home is Minqing County, Fujian. He was born in Qiongzhou, Hainan Island. Later, his mother remarried and became Bai's son, so he changed his name to Bai Yuchan, with the courtesy name Xiangfu, Hainan, and Qiongshan Taoist. He was very talented at a young age. He could recite the Nine Classics at the age of seven and lift a boy hat at the age of twelve. Later, Chen Cuixu, a real person who was hindered by mud, took him to Luofu, and it took him nine years to learn the way. Travel to famous mountain resorts in the south of the Yangtze River. During the Jiading period of Emperor Ningzong of the Song Dynasty, he sent an imperial edict to go to the palace, summoned him to the palace, and granted him the title of Ziqingming Dao Zhenren. He was ordered to visit Taiyi Palace. One day, he did not know where he was going. Throughout his life, he had "a disheveled head and bare feet, which would be very harmful to him." However, he felt refreshed and refreshed. Every time he visits famous mountains and temples, he sees strange and unpredictable things. He always says that he will not get wet when entering water and will not be harmed by soldiers. Bai Yuchan is a well-versed calligrapher, good at poems and poems, and good at calligraphy and painting. He was a bold and chivalrous man who drank heavily without getting drunk. He often wrote impromptu brushstrokes while in the mood of drinking. His seal scripts, official scripts, and cursive scripts, as well as his paintings of figures, plum blossoms, and bamboos, were unrestrained, superb, extraordinary, and elegant. He was quite popular in Fujian, Zhejiang, Guangdong, Jiangxi, and Hubei. influential. The plum blossom and cursive calligraphy of some modern calligraphers and painters also originated from Bai. He is the author of books such as "Collection of Hai Qiong", "Moral Treasure Chapter" and "Luofu Mountain Chronicles".
  In Chinese history, there have been many Buddhist monks with cultural accomplishment, versatile talents and superb skills, such as Sui Zhiyong, Tang Huaisu, etc. They created a large number of works with their sophisticated skills and unique taste, and these works often express emotions. Its embrace contains philosophy and has profound artistic connotation and appreciation value. Bai Yuchan is a Taoist calligrapher and painter with great talent and personality. His knowledge is vast, his teachings are profound, and his natural brushwork is transcendent and extraordinary.

"Four-Character Poems" is Bai Yuchan's cursive script, written in ink on paper, 24.5 cm in length and 52.5 cm in width. The whole poem has eleven lines, totaling 50 characters, and is signed "Yu Chan".
Explanation: The sky is clear and the air is clear, and the three lights are clear. In the Jinfangqu room, Wuzhibao is born. The sky is covered with purple clouds, reflecting my shape. The jade boy and the maid pray for heavenly spirits. The Nine Emperors are high-spirited, the Sanguang Cave □, Er Feigai, ascended to the Purple Garden Jade Toad