| 骨子里 | gǔ zi lǐ | beneath the surface / fundamentally / at the deepest level |   |
| 本就 | běn jiù | by nature / fundamentally / inherently | |
| 人之初 | rén zhī chū | man at birth (is fundamentally good in nature) / the first line of Three character classic 三字經|三字经[San1 zi4 jing1] | |
| 两码事 | liǎng mǎ shì | two things that are fundamentally different from each other / two very different things | |
| 人之初，性本善 | rén zhī chū , xìng běn shàn | man at birth is fundamentally good in nature (the first two lines of Three Character Classic 三字經|三字经[San1 zi4 Jing1]) | |
| 基本完成 | jī běn wán chéng | fundamentally complete / basically finished | |
| 伪命题 | wěi mìng tí | false proposition / fundamentally flawed notion / (in popular usage, can also refer to anything based on a flawed notion, such as a false dichotomy or a question that starts with a false premise) | |
