Analysis of information sources in references of the Wikipedia article "Sun Yun-suan" in English language version.
When did World War II begin? Shanghai 1937: Where World War II Began answers that question in a way most audiences will find surprising. Americans might say December 7, 1941… The day the Japanese Imperial Navy attacked the American naval base at Pearl Harbor, Hawaii. For Europeans, it was September 1, 1939… When Nazi Germany invaded Poland. But in China, people will tell you a different date. August 13, 1937.
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