One of the doorway to the Underground City in Beijing. Photo credit score: Scott Sherrill-Mix/Flickr
In the past due 1950s, relation between the two greatest communist countries—the People’s Republic of China and the Soviet Union—soured on account of differing political ideologies, and for some time it gave the impression as though a big warfare used to be impending—a battle the place neither nation would hesitate to make use of nuclear guns.
In 1969, amidst emerging stress, Chairman Mao Zedong ordered his countrymen to dig tunnels underneath their properties as coverage in opposition to Soviet air raids. By the top of 1970, the rustic’s 75 greatest towns had reportedly dug sufficient holes to carry 60 p.c in their populations.
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