Who wrote the Donglai archway in Taierzhuang, Zi Qi?

Ceng Laide. Visiting the ancient city of Taierzhuang starts from the East Gate. The first thing that catches your eye is the "Purple Gas from the East" archway, which was inscribed by a famous calligrapher. The ancient city of Taierzhuang is located in the center of the Beijing-Hangzhou Grand Canal, at the junction of Taierzhuang District of Zaozhuang City, Shandong Province and four provinces of Shandong Province.