He is most notable for Bloody Saturday,[1] a photograph of a crying baby in Shanghai that he took during the Second Sino-Japanese War.
[1] For capturing moving images he used an Eyemo newsreel camera, and for still photography he used a Leica.
It shows a baby sitting up and crying amid the bombed-out wreckage of Shanghai South Railway Station.
[5] Wong filmed more newsreels covering Japanese attacks in China, including the Battle of Xuzhou in May 1938 and aerial bombings in Guangzhou in June.
[8] In China, he operated under British protection, but continued death threats from Japanese nationalists drove him to leave Shanghai with his family and to relocate to Hong Kong.