泼冷水 (pōlěngshuǐ) Pour cold water on / Dampen the enthusiasm of (Advanced)

泼冷水 (pōlěnɡshuǐ) Pour cold water on / Dampen the enthusiasm of 

The character “泼 (pō)” means to pour or to throw; “冷 (lěng)” means cold

and “水 (shuǐ)” means water.

Example:

Tā běnlái jiù xìnxīn bù zú, nǐ jiù bié gěi tā pōlěngshuǐ le. 他本来就信心不足,你就别给他泼冷水了。 …