Riddle: A plane delivers letters one by one.

Riddle: Airplane delivering mail (guess a place name) Answer: Gaoyou This is the first time I knew about Gaoyou when I was a child. After I started working, I only knew about Gaoyou salted duck eggs, and that was all I knew about Gaoyou. Finally, when I came here, I realized that there are many stories here. Firstly, Gaoyou Lake has beautiful scenery; secondly, Zhongguo Temple is the only temple located on the island in the center of the Beijing-Hangzhou Grand Canal, and the Zhongguo Temple Pagoda is known as the "Southern Wild Goose Pagoda"; thirdly, Yucheng Post is a "living fossil" of China's postal stations, the largest in scale and the best preserved ancient post station in the country. Pu Songling served as a post official here. It was only after he submitted a request to the emperor for funds to repair and renovate that the large-scale water and land post station we see today was built. Wen Tianxiang was detained during his mission to negotiate peace and escaped to Gaoyou via Jingkou (Zhenjiang). He had a thrilling journey and formed a lifelong bond with Gaoyou. Qin Guan and Wang Zengqi are both from Gaoyou. The famous "Travels of Marco Polo" vividly records the operation of the postal stations and relay stations during the Yuan Dynasty, and mentions his stay at the post station in Gaoyou and the scene of the rich local products. Come to Gaoyou to learn something new!