The tripod furnace has a round belly. The furnace is carved with intricate patterns of flowers, birds, insects, and fish. It's unclear what material it's made of – not gold, wood, jade, or stone. It's impervious to water and fire and cannot be cut by a knife.,“Of course it’s my grandfather… Old man, how did you get here!” Su Shier replied without thinking. He turned his head and saw his grandfather walking over with a child in his arms. He was startled and the wild boar he had just straightened dropped from his hands.,Su Er, despite being young, ran very fast. As he ran, he turned and made faces at his grandfather, saying, "Old man, this alchemy furnace is a family heirloom, so it will eventually be mine anyway. What difference does it make if I get it sooner or later"。