Who wrote the first blessing of the Great Wall in Wan Li?

The first blessing of the Great Wall in Wan Li, also known as "Chinese blessing", is one of the representative works of Guan Tong, a calligrapher. Wutai Mountain and Huangshan Mountain are both engraved with his best wishes, and he is known as the first person in China to write and send blessings. Guan Tong is an original professional writer. He never calls himself a calligrapher, but he is a master!