| 对火 | duì huǒ | to use the tip of another person’s lit cigarette to light one's own | 
| 对 | duì | right; correct / towards; at; for / concerning; regarding / to treat (sb a certain way) / to face / (bound form) opposite; facing; matching / to match together; to adjust / to fit; to suit / to answer; to reply / to add; to pour in (a fluid) / to check; to compare / classifier: couple; pair | 
| 火 | Huǒ | surname Huo | 
| 火 | huǒ | fire / urgent / ammunition / fiery or flaming / internal heat (Chinese medicine) / hot (popular) / classifier for military units (old) / Kangxi radical 86 |