| 键 |
jiàn chéng | key travel (of a keyboard) |
| 键 |
jiàn | key (on a piano or computer keyboard) / button (on a mouse or other device) / chemical bond / linchpin |
| 程 |
Chéng | surname Cheng |
| 程 |
chéng | rule / order / regulations / formula / journey / procedure / sequence |