道光咸丰时期，清王朝边疆危机四伏，原来行之有效的边疆政策开始走向破产。
During Daoguang and Xianfeng, Qin dynastys frontier danger was vulnerable to attack on all sides, the effective frontier policy began to fail.
道光咸丰时期，清王朝边疆危机四伏，原来行之有效的边疆政策开始走向破产。
During Daoguang and Xianfeng, Qin dynastys frontier danger was vulnerable to attack on all sides, the effective frontier policy began to fail.
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