Fengcheng was called "Jianyi" in ancient times, with a history of nearly 1800 years, which was deeply loved by Fengcheng people. Therefore, "Jianyi" was later regarded as another name of Fengcheng, and was praised as "the treasure of things, outstanding people and outstanding people". The city is rich in natural resources and is known as the "coal sea, granary and Jin Fengcheng".