For instance, in 1939 Chiang Ching-kuo's mother Mao Fumei was killed in a Japanese air raid. A picture of Chiang during his period of mourning had long been mistakenly believed by the KMT Department of Party History to have been taken during Chiang's time as a student in the Soviet Union. Comparison with other photographs from the same set brought this misapprehension to light.
例如民國二十八年，經國先生母親毛太夫人被日軍飛機轟炸而亡，守喪期間的照片，原先中國國民黨黨史會一直誤認為經國先生留俄期間的照片，經同組照片的比對，才修正原先謬誤。