| 系泊 | jì bó | to moor | |
| 系领带HSK 5 | jì lǐng dài | to tie one's necktie |
| 联系HSK 4 | lián xì | connection; contact; relation; to get in touch with; to integrate; to link; to touch | |
| 系统HSK 5 | xì tǒng | system; Classifiers: 个 | |
| 体系HSK 6 | tǐ xì | system; setup; Classifiers: 个 | |
| 系列HSK 6 | xì liè | series; set | |
| 一系列HSK 6 | yī xì liè | a series of; a string of |
| 1 | It's okay if I'm late. | |
| 2 | They have a good relationship. | |
| 3 | My boss and I have a close relationship. | |
| 4 | Please leave your contact information. | |
| 5 | Which department is she a professor in? |