Answer:It has cost China more sovereignty and territory, and China has lost more than 1 million square kilometers of land. The Sino-Russian Treaty of Beijing also created the conditions for Tsarist Russia to seize more of China's western territories. The degree of semi-colonial and semi-feudal Chinese society has further deepened; The Qing rulers defected to foreign invaders and began to become their vassals and tools, and Chinese and foreign reactionary forces openly colluded to suppress the resistance of the Chinese people.
In the Second Opium War, the Anglo-French army occupied the capital and burned the Old Summer Palace, which dealt a heavy blow to Chinese culture and psychology, the landlord class was divided, and some Manchu rulers decided to "master and destroy with skill", thus starting the "foreign affairs movement" and ushering in the return of the light to Tongzhi Zhongxing. Foreign envoys stationed in Beijing strengthened their influence and control over the Qing government.
Economically, the expansion of foreign aggressive forces into China's coastal provinces and into Chinese mainland facilitated the dumping of commodities by the great powers, the plunder of cheap raw materials and labor, and the aggressive impact of the capitalist economy.
After the Second Opium War, the legalization of the opium trade, the departure of Chinese workers abroad, and the permission of foreigners to go to the interior as missionaries all further intensified social contradictions in China.
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