滴水不漏 watertight
Explanation
这个成语形容说话、办事非常细致、周密，无懈可击。也形容钱财全部抓在手里，轻易不肯出手。
This idiom describes a very meticulous and thorough way of speaking and doing things, without any loopholes. It also describes holding onto money tightly and being reluctant to spend it easily.
Origin Story
在一个繁华的街道上，有一家名叫“万宝轩”的珠宝店。店里的老板名叫王掌柜，以其精明强干和一丝不苟著称。他不仅对每件商品的来龙去脉都了如指掌，而且对店里的每一个角落都了如指掌。 一天，一个身穿华服的富商来到“万宝轩”，想要购买一件价值连城的翡翠项链。王掌柜热情地接待了富商，并拿出店里最珍贵的翡翠项链供他欣赏。富商仔细端详着项链，眼神中充满了贪婪。 王掌柜看出了富商的心思，便笑着说：“这可是我们店里最珍贵的宝贝，绝对是真品，滴水不漏。您要是看中了，我可以给您打个折。”富商听到这话，脸上露出满意的笑容。他仔细检查了项链，确认没有问题后，便爽快地付了钱，将项链买下了。 富商离开后，王掌柜的手下问他：“老板，您怎么会把那么贵重的项链卖给他呢？他看起来不像个诚实的人。”王掌柜笑着说：“正是因为他不像个诚实的人，我才会卖给他。因为他知道我滴水不漏，他就不敢耍花招。” 王掌柜的滴水不漏，不仅体现在对商品的把控，也体现在对人心的洞悉。他正是凭借着这种精明和谨慎，才将“万宝轩”经营得风生水起，成为远近闻名的珠宝商。
On a bustling street, there was a jewelry store called "Wanbao Xuan." The store owner, Wang, was known for his intelligence, efficiency, and meticulousness. He not only knew the ins and outs of every item, but also every corner of the store. One day, a wealthy businessman dressed in fine clothes came to "Wanbao Xuan" and wanted to buy a valuable jade necklace. Wang warmly received the businessman and took out the store's most precious jade necklace for him to admire. The businessman carefully examined the necklace, his eyes filled with greed. Wang saw the businessman's thoughts and said with a smile: "This is our most precious treasure, it's definitely genuine, without a single flaw. If you like it, I can give you a discount." The businessman smiled with satisfaction. After carefully examining the necklace and confirming that there were no problems, he readily paid for it and bought the necklace. After the businessman left, Wang's staff asked him: "Boss, why did you sell him such a valuable necklace? He doesn't seem like an honest person." Wang smiled and said: "It's precisely because he doesn't seem like an honest person that I sold it to him. He knows that I don't miss a single detail, so he wouldn't dare to play tricks." Wang's meticulousness was not only reflected in his control of the goods, but also in his understanding of human hearts. It was precisely because of this shrewdness and prudence that he was able to make "Wanbao Xuan" flourish and become a renowned jeweler.
Usage
这个成语形容做事非常细致、周密，没有疏漏。也可以用来形容对钱财十分看重，舍不得花。
This idiom describes doing things very meticulously and thoroughly, without any omissions. It can also be used to describe someone who is very attached to money and reluctant to spend it.
Examples
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他的计划非常周密，可以说是滴水不漏。
tā de jì huà fēi cháng zhōu mì, kě yǐ shuō shì dī shuǐ bù lòu.
His plan is very thorough, it can be said that it is watertight.
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这次会议，他们准备得滴水不漏，没有一点纰漏。
zhè cì huì yì, tā men zhǔn bèi de dī shuǐ bù lòu, méi yǒu yī diǎn pī lòu.
They are well prepared for this meeting, there is not a single flaw.