闭关锁国 Closed-door policy
Explanation
闭关锁国是指一个国家关闭对外贸易和外交往来，实行封闭政策。这种政策往往会导致经济落后和国际孤立。
Closed-door policy refers to a country's closure of foreign trade and diplomatic exchanges, implementing a closed-door policy. This policy often leads to economic backwardness and international isolation.
Origin Story
话说清朝乾隆年间，大清国力强盛，皇帝自诩为天朝上国，认为万国来朝是理所当然。一些大臣也盲目乐观，他们认为外国商品粗制滥造，根本无需引进，而中国的丝绸、茶叶等商品在世界各地都非常畅销，因此无需与外界进行贸易往来。于是，他们纷纷建议皇帝实行闭关锁国政策，禁止与外国进行任何形式的贸易和交流。然而，这种闭关锁国的政策最终导致了中国与世界脱节，错失了近代工业革命带来的机遇，也为后来西方列强的入侵埋下了伏笔。
During the Qianlong period of the Qing Dynasty, China was a powerful country. The emperor considered himself the supreme ruler of the world, believing that all nations should pay tribute to him. Some ministers were blindly optimistic, believing that foreign goods were poorly made and did not need to be imported, while Chinese silk and tea were in great demand all over the world, so there was no need to trade with the outside world. Therefore, they suggested to the emperor to implement a closed-door policy and prohibit any form of trade and exchange with foreign countries. However, this policy of isolation eventually led to China's detachment from the world, missing the opportunities brought by the Industrial Revolution and paving the way for the invasion of Western powers.
Usage
主要用于形容国家政策，也可用于比喻个人或组织保守、不与外界交流的状态。
Mainly used to describe national policy, it can also be used to describe the conservative state of an individual or organization that does not communicate with the outside world.
Examples
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明朝末年，闭关锁国政策导致了国家经济的停滞。
Míng cháo mò nián, bì guān suǒ guó zhèngcè dǎozhì le guójiā jīngjì de tíngzhì.
At the end of the Ming Dynasty, the closed-door policy led to the stagnation of the national economy.
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清朝统治者长期奉行闭关锁国，最终错失了与世界接轨的机会。
Qīng cháo tǒngzhì zhě chángqī fèngxíng bì guān suǒ guó, zuìzhōng cuòshī le yǔ shìjiè jiēguǐ de jīhuì
The rulers of the Qing Dynasty for a long time adhered to the closed-door policy, and eventually missed the opportunity to integrate with the world.