春寒料峭
Pinyin: chūn hán liào qiào
Explanation: Spring can be unexpectedly cold despite the arrival of warmer weather.
Source: 唐·韩愈《早春呈水部张十八员外》："天街小雨润如酥，草色遥看近却无。最是一年春好处，绝胜烟柳满皇都。"
Example Sentence: Despite the warm sunshine, there was still a hint of that familiar spring chill in the air, reminding us that winter had not quite relinquished its grip just yet.
