At the time it was not necessary to have a visa to enter Shanghai, but the visas allowed the Jews to leave Austria. Many Jewish families left for Shanghai, whence most of them would later leave for Hong Kong and Australia. Ho continued to issue these visas until he was ordered to return to China in May 1940. The exact number of visas given by Ho to Jewish refugees is unknown. It is known that Ho issued the 200th visa in June 1938, and signed the 1906th visa on 27 October 1938. How many Jews were saved through his actions is unknown, but given that Ho issued nearly 2,000 visas only during his first half year at his post, the number may be in the thousands.