| 章 | zhang1 | badge |
| 记号 | ji4 hao4 | seal |
| 封 | feng1 | to seal |
| 密封 | mi4 feng1 | pressurize |
| 封锁 | feng1 suo3 | to seal off |
| 严 | yan2 | father |
| 密闭 | mi4 bi4 | sealed |
| 封闭 | feng1 bi4 | sealed |
| 符 | fu2 | mark |
| 拆开 | ca1 kai1 chai1 kai1 | to unpick |
| 盖章 | gai4 zhang1 | to affix a seal to sth |
| 紧闭 | jin3 bi4 | tightly closed |
| 印章 | yin4 zhang1 | chop |