What was the foreign policy of the Qing Dynasty at that time? What was the impact of this policy on the development of Chinese society?

Positive impact: This policy, as a means of passive defense, had played a certain role in national self-defense. To a certain extent, it combated and restricted rampant smuggling at sea as well as piracy. It played a positive role in stabilizing the coastal areas. The aggressive activities of the Western colonizers, played a certain role in self-defense

Negative effects: 1, so that China is isolated from the world, a serious obstacle to the development of the germ of capitalism.

2, culturally, economically, scientifically and the world can not connect, hindering the development of advanced technology and thought, is the root cause of modern China backwardness and defeat.

3. Reducing the opportunity of contact with the outside world hindered the economic development of the country and completely lost the initiative of foreign trade blocked the scientific and cultural exchanges with foreign countries, thus hindering the development of productive forces and social progress

4. Restricted the development of foreign trade and navigation

5. It kept China in a state of long-term isolation and seriously hindered the development of the domestic commodity economy and the sprouting of capitalism

6. development of the budding capitalism