Component 亥 hài twelfth of the twelve Earthly Branches Stroke order ▶ 亥 used in 7 characters HSK 1 孩 hái young child HSK 3 刻 kè to carve or engrave patterns or characters on bamboo, wood, jade, stone, metal, etc. 该 gāi should; ought to HSK 4 咳 ké to cough HSK 6 核 hé hard pit or stone at the center of a fruit HSK 7 阂 hé to be blocked or separated by a barrier 骇 hài to frighten; to shock