In the south of Zhao County, Shijiazhuang City, Hebei Province, it took about 3 hours to drive from Beijing. Zhaozhou Bridge was built in the Sui Dynasty. It is the world's existing long-lasting, largest span, and most complete single-hole tan arc open shoulder stone arch bridge. It has also been in textbooks, but it is such a famous ancient building, and it is not far from me. I know that I have only visited by chance now. Maybe this is the black under the light. Speaking back to Zhaozhou Bridge, because it is too famous, there is actually nothing to say, if you want to say more, you can actually put the text directly. I can only say that for so many years, I finally saw the real thing, and I realized a thought, which is of great significance.