What are Zhili calligraphy works?

What is Zhili calligraphy, and what is the abbreviation of Zhili calligraphy for the location of the capital in ancient times? It's as if we are now called the capital of Beijing. Zhili was the name of the Ming and Qing Dynasties. The Han Dynasty called the capital its seat and Li Si. The meaning is the same, so the name refers to the location of the capital. There is no fixed place. The Han Dynasty refers to Chang 'an (now Xi 'an area) and the ground under Chang 'an's jurisdiction. Zhili in Ming and Qing dynasties refers to Beijing, Tianjin and many places in Hebei near Beijing and Tianjin.