事不宜迟 Time waits for no one
Explanation
指事情要及时迅速地做，不能拖延。
It means that a matter should be done quickly and immediately, and no delay is allowed.
Origin Story
话说唐朝时期，一位名叫李白的诗人正准备去拜访一位隐居山中的朋友。他收拾好行装，正要出发，却迟迟未能动身，因为他心里犹豫不决，不知道该选择哪条路走。这时，一位老仆人走过来，语重心长地对他说："公子，事不宜迟，这等好事，我们应该即刻动身，早点拜访朋友，岂不快哉！"李白听了老仆人的话，深以为然，便不再犹豫，立即动身前往朋友的隐居之处。在路上，李白一边欣赏着美丽的景色，一边思考着人生的哲理，心情十分愉悦。当他到达朋友的住处时，朋友非常高兴地接待了他，两人促膝长谈，共话诗词歌赋，度过了一段美好的时光。这次拜访，不仅让李白欣赏了美丽的风景，还加深了他与朋友的友谊，更让他明白了一个道理：人生如白驹过隙，时间宝贵，"事不宜迟"，许多事情都应该及时去做，而不能拖延。
In the Tang Dynasty, a poet named Li Bai was about to visit a friend who lived in the mountains. After packing his luggage, he was about to leave but kept delaying because he couldn't decide which path to take. At this moment, an old servant came and said to him earnestly: "Sir, time is of the essence. We must leave immediately to visit our friend. Won't it be wonderful!" Li Bai agreed and immediately set off to his friend's secluded residence. On the way, he enjoyed the beautiful scenery and pondered the philosophy of life, feeling very happy. When he arrived, his friend warmly welcomed him, and the two engaged in a long heart-to-heart conversation on poetry and literature, spending a wonderful time together. This visit not only allowed Li Bai to enjoy the beautiful scenery but also deepened his friendship with his friend and taught him a lesson: life is fleeting, time is precious. Many things should be done promptly rather than delayed.
Usage
用于劝诫人们要抓紧时间，不要拖延。
Used to urge people to seize the time and not delay.
Examples
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战机稍纵即逝，事不宜迟，我们必须马上行动！
zhanji shaozongjishi,shibuyichi,womenbixuma shangxingdong!
Time is of the essence, we must act now!
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机会难得，事不宜迟，赶紧抓住！
jihune nanduo,shibuyichi,gangjin zhuazhu!
The opportunity is rare, don't delay, grab it!