There are not many kiln sites in Xikou kiln system, less than five. The most famous porcelain kiln is Xikou Wayaoyang. In the late Southern Song Dynasty, Xikou Kiln fired top-class black-tire Ge Kiln porcelain, commonly known as "iron bone" or "iron tire", and the locals called it "sandwich biscuit". The glaze color is mainly pink blue, some are like blue waves and some are like jade. Its characteristic is "purple mouth and iron feet", which naturally opens the film, and the product overflows a quaint and peculiar aesthetic taste.