《大地》是美国女作家赛珍珠的一部力作，为此，她先后获得“普立兹奖”和诺贝尔文学奖。然而日本间谍却盗用这部名作策划了一个轰炸重庆的阴谋。抗战初期，国民党政府迁都重庆后，重庆便经常遭受日机多架次的轮番轰炸，损失极其惨重。可令人费解的是密布在重庆四周的高炮部队? “Earth” is a masterpiece of the American woman writer Pearl S. Buck, for which she has won the “Pulitzer Prize” and the Nobel Prize in Literature. However, Japanese spies used the masterpiece to plot a conspiracy to bomb Chongqing. In the early days of the war of resistance against Japan, following the relocation of the Kuomintang government to Chongqing, Chongqing was often bombarded by many sorties of Japanese planes. The loss was extremely heavy. What can be puzzling is the artillery units scattered around Chongqing?