qīng cháo / hòu qī / shí xíng / bì guān suǒ guó / zhèng cè / dǎo zhì / guó jiā / zhú jiàn / luò hòu

清朝后期实行闭关锁国政策，导致国家逐渐落后。

In the late Qing dynasty, the policy of closing the country to international contact led to the nation's gradual backwardness.