Qian Tong House is assembled, without any nail or glue, by Chinese traditional carpenters on site with 136 separate wood components prefabricated by 5-axis CNC machine. An evolved Chinese wood structure of mortise-tenon joints is practiced combining modern processing techniques with ancient oriental esthetics. In this way, the philosophy of sustainability is proposed: circular construction and in-place rebirth based on the life cycle of both human and trees.