| 内部 | nei4 bu4 | internal |
| 内 | nei4 | within |
| 内地 | nei4 di4 | inland |
| 内心 | nei4 xin1 | interior |
| 里头 | li3 tou2 | inside |
| 境内 | jing4 nei4 | domestic |
| 内政部 | nei4 zheng4 bu4 | Ministry of the Interior |
| 装修 | zhuang1 xiu1 | to fit up |
| 腹地 | fu4 di4 | outback |
| 吐絮 | tu3 xu4 | cotton boll splits open and reveals its white interior |
| 室内设计 | shi4 nei4 she4 ji4 | interior design |
| 暗处 | an4 chu4 | interior |
| 中空 | zhong1 kong1 | hollow |