What is the equal to 40 000 yin in american dollars?

While this direct army to army fighting lasted during the early phases of the war, large numbers of Chinese defeats compared to few victories eventually led to the strategy of stalling the war. Large areas of China were conquered during the early stages of the war but the Japanese advancements began to stall in mid-1938. The Chinese strategy at this point was to prolong the war until it had sufficient strength to defeat the Japanese. Chinese troops sometimes engaged in a practice of scorched earth in an attempt to slow down the Japanese. Dams and levees were sabotaged which led to the 1938 Huang He flood. In addition, industry was transported from coastal industrialized areas to inland cities such as Chongqing. By 1940, the war had reached a stalemate with both sides making minimal gains. The Chinese had successfully defended their land from oncoming Japanese on several occasions while strong resistance in areas occupied by the Japanese made a victory seem impossible to the Japanese. This frustrated the Japanese and led them to employ the "Three Alls Policy" (kill all, loot all, burn all) (三光政策, Hanyu Pinyin: Sānguāng Zhèngcè, Japanese On: Sankō Seisaku). It was during this time period that a bulk of Japanese atrocities were committed.