- 一万五 yīwànwǔ fifteen thousandthe number 15,000
- 不怕一万，就怕万一 bùpàyīwàn, jiùpàwànyī precautionIt is better to be safe than sorry; one should be prepared for even the most unlikely negative outcome.
- 说一千，道一万 shuōyīqiān, dàoyīwàn ultimatelywhen all is said and done; in the final analysis; at the end of the day