| 信 | xìn | letter / mail / CL:封[feng1] / to trust / to believe / to profess faith in / truthful / confidence / trust / at will / at random |
| 封 | fēng | to confer / to grant / to bestow a title / to seal / classifier for sealed objects, esp. letters |
| 电子邮件 | diàn zǐ yóu jiàn | email / CL:封[feng1],份[fen4] |
| 回信 | huí xìn | to reply / to write back / letter written in reply / CL:封[feng1] |
| 电报 | diàn bào | telegram / cable / telegraph / CL:封[feng1],份[fen4] |
| 封 | Fēng | surname Feng |
| 邀请函 | yāo qǐng hán | invitation letter / CL:封[feng1] |