Who is the originator of Qixian city wall slogan?

Xie Lingyun. From the Eastern Jin Dynasty to Liu Song Dynasty, he was both a minister, a Buddhist scholar and a traveler. He is the founder of landscape poetry school, and he is also familiar with history. He is good at calligraphy, translating Buddhist scriptures and writing the Book of Jin, including Xie's Le Kang Collection. He is also good at calligraphy, famous for his running script, and created a Xie style that has a far-reaching impact on later generations.