理
Meanings
1. texture
2. grain (of wood)
3. inner essence
4. intrinsic order
5. reason
6. logic
7. truth
8. science
9. natural science (esp. physics)
10. to manage
11. to pay attention to
12. to run (affairs)
13. to handle
14. to put in order
15. to tidy up
Characters used
Examples2
谁
Who cares about him! I care about him, and then I don't!
不用
Do not take any notice of him.