- 当头一棒 dāngtóuyíbàng a severe blowa blow on the head; a sudden and severe blow or setback that comes as a shock
- 头一遭 tóuyīzāo first timethe very first time; for the first time in one's life
- 头一回 tóuyīhuí the first timethe very first time something happens; for the first time
- 头一茬 tóuyīchá first cropthe first crop or harvest of a season