70年前的1936年,孙明经写给未婚妻的25封信,在今天被称为情书,但里面没有一个字关乎情爱孙明经从南京出发,沿陇海线西行。头上的晴空里有3架日军飞机不断地盘旋,这一天是1937年6月9日,28天后爆发了“七七事变”。而此时的孙明经写给未婚妻吕锦瑗的信中把头上的飞机写成:“为我们的摄影对像更增色不少”。但是他笔锋一转:“刚才在车站上拍了100多尺。宪警们来盘查了几次,最初怕我们是‘日 In 1936, 70 years ago, in 1936, 25 letters written by Sun Mingjing to his fiancée were called love letters today. However, there is no single word about the love of Sun Mingjing starting from Nanjing and traveling west along the Longhai Line. There were three Japanese planes circling in the clear sky of the head. The day was June 9, 1937, and 28 days after the outbreak of the ”July 7 Incident“. At this time, Sun Ming wrote to his fiancee Lu Jintao’s letter to write his head on the plane: ”for our photographic objects a lot more color.“ However, he turned his attention: ”just took more than 100 feet at the station.German police to check the number of times, initially afraid we are ’day