This book summarizes the reason for the decline of the "e;Yue Kiln"e; in more than 3 centuries from the East Jin Dynasty to the Sui Dynasty and points out that the invention and use of saggar in the recovery period of "e;Yue Kiln"e; is a great pioneering work. Based on a large number of qualitative and quantitative analysis of the remains of kiln sites, the author points out that Yue Kiln tends to take the lead in the country during its heyday. The establishment of "e;Tribute kiln"e; and the firing of "e;secret color porcelain"e; are of great significance to the promotion and acceleration of the development of China's porcelain industry, and have a far-reaching influence at home and abroad.