Never knew there had been one until I found this article. "In the 1930s, the city of Shanghai in mainland China was an incredibly diverse place, which played host to thousands of British, French, Iraqi, American, and Russian men and women. The neighborhood of Tilanqiao was home to a community of Russian Jews, and the Ohel Moshe Synagogue still stands as a testament to the historical tolerance of the Chinese. As life became more difficult and more dangerous for Jewish communities in Europe, many chose the seven-thousand-kilometer journey to Shanghai, one of the few places at the time that did not require any special visa to guarantee entry. Between 1933 up to 1941, more than 20,000 Jews arrived in the city. In those early years, the Jewish community prospered. There was an area dubbed “Little Vienna” that was filled with émigré musicians, businesspeople, dentists, and doctors. Cafés did a brisk trade, and there were all the usual festivals and other cultural events associated with Jewish culture. The once tiny fishing village that had been Shanghai was, in that decade, the fifth largest city in the world and had attracted entrepreneurs and businesspeople in their thousands. It was a multicultural hub alive with possibilities. But it was not all good news. In 1941, Shanghai fell into the hands of the Japanese military, allies of Germany’s Nazi regime. Under orders from the Nazi high command, the Jewish community was rounded up and confined to Tilanqiao." www.warhistoryonline.com/news/tilanqiao-shanghai.html
..I'm not too surprised....they seem very industrious/'''defensive-oriented''/etc --and this against all odds and with many disadvantages......