慢藏诲盗 Careless storage invites theft
Explanation
指收藏财物不谨慎，会引诱别人去偷窃。比喻管理不严，会助长不良风气。
It means that careless storage of valuables will tempt others to steal. It is also a metaphor for lax management, which will encourage bad habits.
Origin Story
从前，有个富商，家财万贯，但他为人疏忽大意，金银财宝堆积如山，却少有防范措施。他的库房门窗破损，看守人员也懈怠懒散。消息不胫而走，附近一些不法之徒闻风而动，伺机盗窃。果然，不久之后，库房失窃，大量财物被盗。富商这才追悔莫及，感叹道：‘我真是‘慢藏诲盗’啊！’从此，他痛改前非，加强了库房的安保措施，并将财物妥善保管。这个故事告诫我们，保管财物要谨慎细心，不可疏忽大意，否则会助长盗贼的嚣张气焰，给自己带来巨大的损失。 此外，‘慢藏诲盗’也常被用来比喻管理松懈，会助长不良风气。例如，一个学校纪律松散，学生违反校规校纪屡禁不止，老师睁一只眼闭一只眼，久而久之，不良风气就会蔓延，学校的整体风气就会受到影响。这就如同‘慢藏诲盗’，管理上的疏忽大意，等于变相地纵容了不良行为，最终会给自己带来更大的麻烦。
Once upon a time, there was a wealthy merchant who was careless with his possessions. His storeroom was poorly secured, and the guards were negligent. Word spread quickly, and soon the storeroom was robbed. The merchant regretted his negligence and learned from his mistake. This story warns us against treating our belongings carelessly; negligence only encourages theft and lands us in trouble.
Usage
常用来比喻管理不严，会助长不良风气，或指保管不慎，招致损失。
Often used to describe lax management which will encourage bad habits, or careless custody which will result in losses.
Examples
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家里的财务管理要谨慎，否则容易‘慢藏诲盗’。
jiā lǐ de cáiwù guǎnlǐ yào jǐnshèn, fǒuzé róngyì ‘màn cáng huì dào’。
He carelessly guards valuable items, which is tantamount to 'inviting theft by careless storage'.
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他如此大意地保管贵重物品，简直是‘慢藏诲盗’。
tā rúcǐ dà yì de bǎoguǎn guìzhòng wùpǐn, jiǎnzhí shì ‘màn cáng huì dào’。
Family financial management should be cautious, otherwise it is easy to 'invite theft by careless storage'.