Legendary jokes of Hakka tulou in Yongding

In the 1980s, the earth buildings in Nanjing County, Zhangzhou City, Fujian Province and Yongding County, Longyan City were mistaken for mushroom-shaped nuclear weapons by western countries, which made them nervous and sent them a dish to spy on the truth. As everyone knows, before the first atomic bomb mushroom cloud flew, this unique large-scale rammed earth residential building, which had been produced since the Song and Yuan Dynasties, had stood on more than 600 square kilometers of land in southwest Fujian for centuries.