Baotu Spring was first written by Yan Bi in Ming Dynasty.

Baotu Spring, known as the "first spring", began with the poem "The river is full in front of the thirsty horse cliff and the river is full of pearls" in Ji 'nan Seventy-two Spring Poems by Yan Bi in Ming Dynasty. Seventy springs in Jinan flow milk, and the sudden surge is called the first spring. "Later, it was also said that Emperor Qianlong drank Baotu spring water when passing by Jinan in the south of the Yangtze River. He thought the water was fresher than the Yuquan water he gave Baotu Spring, the first spring in the world. He also wrote a book about Baotu Spring and an inscription about "agitation" ~