- 空无一人 kōngwúyīrén not a soul in sightnot a single person is present; completely deserted or empty
- 一人之交 yīrénzhījiāo intimate friendshipa very deep and intimate friendship between two people as if they were one person
- 一人得道,鸡犬升天 yīréndédàojīquǎnshēngtiān ride someone's coat-tails to successWhen one person gains power or attains enlightenment, their relatives and followers also benefit; based on the legend of [[刘安|劉安|liu2 an1]] who became an immortal and took his pets to heaven with him
- 孤丁一人 gūdīngyīrén all aloneto be all by oneself; solitary and without any company or family
- 旷代一人 kuàngdàiyīrén peerless personan unmatched individual throughout the ages; a person without equal in his or her generation
- 第一人称 dìyīrénchēng first personRefers to the speaker or narrator; in grammar, used for words like [[我|我|wo3]] and [[我们|我們|wo3 men5]].
- 第一人称射击 dìyīrénchēngshèjī first-person shooterfirst-person shooter; a genre of video games centered on gun and other weapon-based combat from a first-person perspective