| 中转 | zhōng zhuǎn | to change (train or plane) / transfer / correspondence | ![]() |
| 音讯 | yīn xùn | letters / mail / news / messages / correspondence | ![]() |
| 函件 | hán jiàn | letters / correspondence | ![]() |
| 书函 | shū hán | letter / correspondence / slipcase | ![]() |
| 简牍 | jiǎn dú | bamboo and wooden slips (used for writing on in ancient times) / letter / correspondence / book / document | ![]() |
| 我司 | wǒ sī | our company (used in business correspondence, contracts etc) (abbr. for 我方公司[wo3 fang1 gong1 si1]) | ![]() |
| 文书 | wén shū | document / official correspondence / secretary / secretariat | ![]() |
| 函授 | hán shòu | to teach by correspondence | ![]() |
| 信函 | xìn hán | letter / piece of correspondence (incl. email) | ![]() |
| 函大 | hán dà | correspondence university (abbr. for 函授大學|函授大学[han2shou4 da4xue2]) | ![]() |
| 一一对应 | yī yī duì yìng | one-to-one correspondence | ![]() |
| 一一映射 | yī yī yìng shè | bijective map (i.e. map between sets in math. that is one-to-one and onto) / one-to-one correspondence | ![]() |
| 一多对应 | yī duō duì yìng | one-to-many correspondence | ![]() |
| 中转柜台 | zhōng zhuǎn guì tái | transfer desk / correspondence desk | ![]() |
| 保角对应 | bǎo jiǎo duì yìng | (math.) distance-preserving correspondence / conformal map | ![]() |
| 保长对应 | bǎo cháng duì yìng | (math.) distance-preserving correspondence / isometry | ![]() |
| 函授课程 | hán shòu kè chéng | correspondence course | ![]() |
| 印绶 | yìn shòu | sealed ribbon fastening correspondence (in former times) | ![]() |
| 外交信函股 | wài jiāo xìn hán gǔ | Diplomatic Correspondence Unit | ![]() |
| 文书股 | wén shū gǔ | Correspondence Unit | ![]() |
| 维持和平行动函授教学方桉 | Programme of Correspondence Instruction in Peacekeeping Operations | ![]() | |
| 编辑、出版和文书科 | Editorial, Publishing and Correspondence Section | ![]() | |
| 国际学校通信和交换组织联合会 | International Federation of Organizations of School Correspondence and Exchanges | ![]() | |
| 国际函授教育理事会 | International Council for Correspondence Education | ![]() | |
| 函授大学 | hán shòu dà xué | correspondence university | ![]() |
| 私信 | sī xìn | private correspondence / personal letter / (computing) personal message (PM) / to message sb | ![]() |
| 案牍 | àn dú | official documents or correspondence | ![]() |
