The nose knob, named for its shape, was cast in bronze from earliest times up until the Sui dynasty (581 CE). Until the end of the Wei dynasty (225 CE) both nose and tile knobs were called nose knobs.
- Pinyin: bí niŭ.
The nose knob, named for its shape, was cast in bronze from earliest times up until the Sui dynasty (581 CE). Until the end of the Wei dynasty (225 CE) both nose and tile knobs were called nose knobs.