Introduction to the ancient city of Jimingyi: Jimingyi was built in the Yuan Dynasty. It is the best-preserved, largest and most distinctive postal complex in China. It has important historical, artistic and scientific values. It is called a "living fossil" of postal archeology and confidential archeology. The unique style of Jimingyi has also been favored by the film industry, such as "The Battle of Taierzhuang", "The Battle of the Great Wall", "The Great Battle", "Unparalleled Warriors", "Blue Flower", "Super Spy", "600 Days" The other films were filmed in the ancient city.