Jin Dajian is a craftsman from Jizhou. An excellent sculptor who can carve all kinds of stone tablets, official seals and jade rocks, he earns himself the nickname "Jade Armed Craftsman". Jin Dajian is in charge of carving official seals and other miscellaneous affairs for Liangshan. On the eve of the final campaign against the rebel leader Fang La, the emperor summons Jin Dajian back to the capital. Jin Dajian serves the emperor as an imperial craftsman for the rest of his life.