The production process is complex, and each piece is a treasure handed down from generation to generation. Jigang Cup was first burned in Chenghua period of Ming Dynasty. At that time, the materials used by the Imperial Kiln Factory came from Jingdezhen, and the burned carcass was white, and the sole tire soil was pale yellow. Chicken cylinder cup? Bones? It is the cultural background and unique historical background behind it. In ancient times, the royal chicken cylinder cup was directly supplied to the court by the official kiln, and emperors and generals could not own it even if the level was higher. Official kilns have almost strict requirements for porcelain firing, and the qualified probability is only a few percent, so the number of finished products is very small.