Huai'an Prefecture is located in Huai'an City, Jiangsu Province, a famous historical and cultural city. It is built in the east, middle and west. The central part of the central part is an office, mainly including: Yimen, Jieshifang, Zhengtang, Liuke, Ertang, etc.; the middle section of the middle road is the residence of the prefects and family members, mainly including: Shangfang, Dongfangfang, Qingyutang; East Road is a welcoming place for banquets. It mainly includes: Stage, Houhou Temple, Baohan Hall, Tenghua Hall, Jixian Hall, Back Garden, etc. West Road is the Military Capture Department, which mainly has gates and gates. Zhengtang, Ertang, Shangfang and Sanbanfang, Treasury, Post Office, and Yanzhan Station.