It is an ancient round cave tomb in China, also known as "round cave tomb" or "round tomb". Most of these ancient tombs are traditional tombs of the Han nationality, which mainly appear in northern areas, such as Henan and Shanxi. The round cave tomb is a relatively simple tomb structure, which usually consists of a civil box and a stone tomb. The tomb is generally round or nearly round, and the inner wall is made of blue bricks, so it is called a round blue brick tomb. This kind of tomb has certain historical and cultural value and archaeological significance, and has important reference value for studying ancient tomb customs and social outlook.