公函

• ピンイン: gōng hán
• 漢字の分解: 公 = 八 + 厶 (official); 函 = 凵 + 肀 (letter, container for documents)

意味

公文書（公式書簡）

Distinct from personal letters, 公函 carry official authority and are used for inter-agency requests, notifications, and formal inquiries. They follow a strict format with letterhead, reference numbers, and official seals.

例文

1. 市政府向相关部门发出了一份公函，要求限期整改。
2. 学校收到教育局的公函，通知下周接受年度检查。
3. 合作意向须先以公函形式提出，方可进入审核流程。

使い方ガイド

場面: government, administration, legal

トーン: neutral

正しい言い方

• 请以公函形式将贵单位的意见书面提交。(Please submit your organisation's opinion in the form of an official letter.)
• 收到上级单位公函后，须在五个工作日内作出回复。(Upon receiving an official letter from a superior authority, a response must be made within five working days.)

避ける言い方

• 公函 for informal internal memos — use 通知 or 备忘录 instead

起源と歴史

公 (official/public) + 函 (letter/correspondence)

文化的背景

時代: Modern

世代: Working adults

社会的背景: Professional