| 深层 | shēn céng | deep layer / deep / deep-seated / underlying |  |
| 体质 | tǐ zhì | (a person's) constitution / underlying physical condition / physical makeup / (of an organization, society etc) structural soundness | |
| 脉络 | mài luò | arteries and veins / network of blood vessels / vascular system (of a plant or animal) / (fig.) fabric (i.e. underlying structure, as in "social fabric") / overall context |  |
| 动因 | dòng yīn | motivation / moving force / underlying force / agent | |
| 貌合神离 | mào hé shén lí | the appearance of unity, but divided at heart (idiom) / seeming harmony belies underlying disagreement | |
| 格致 | gé zhì | to study the underlying principle to acquire knowledge (abbr. for 格物致知[ge2 wu4 zhi4 zhi1]) / word for Western natural sciences during late Qing | |
| 格物 | gé wù | to study the underlying principles, esp. in neo-Confucian rational learning 理學|理学[li3 xue2] / word for Western natural sciences during late Qing | |
| 推究 | tuī jiū | to study / to examine / to probe / to study the underlying principles | |
| 格物致知 | gé wù zhì zhī | to study the underlying principle to acquire knowledge (idiom) / pursuing knowledge to the end | |
| 貌合心离 | mào hé xīn lí | the appearance of unity, but divided at heart (idiom) / seeming harmony belies underlying disagreement | |
| 苦根 | kǔ gēn | underlying cause of poverty | |
| 郑码 | Zhèng mǎ | Zheng coding / original Chinese character coding based on component shapes, created by Zheng Yili 鄭易里|郑易里[Zheng4 Yi4 li3], underlying most stroke-based Chinese input methods / also called common coding 字根通用碼|字根通用码[zi4 gen1 tong1 yong4 ma3] | |
| 研究国际恐怖主义的根本原因小组委员会 | | Sub-Committee to Study the Underlying Causes of International Terrorism | |
| 森林砍伐和退化的根本原因全球讲习班 | | Global Workshop on Addressing the Underlying Causes of Deforestation and Forest Degradation | |
| 基础病 | jī chǔ bìng | underlying medical condition | |
