| 空 |
kōng xū | hollow / emptiness / meaningless |
| 空 |
kōng | empty / air / sky / in vain |
| 空 |
kòng | to empty / vacant / unoccupied / space / leisure / free time |
| 虚 |
xū | emptiness / void / abstract theory or guiding principles / empty or unoccupied / diffident or timid / false / humble or modest / (of health) weak / virtual / in vain |