The invasion of Shanghai by the Japanese in 1937 is well documented and of course Wikipedia has a page: wikipedia.org/wiki/Battle_of_Shanghai

The refugees left the Chinese Quarter and went to The French Concession and then on to the International Settlement. These were some of the refugees who later met their death in the accidental bombing by Chinese aircraft.

Refugees fleeing from Chinese Quarter into the French Concession

Refugees going over the Garden Bridge to the International Settlement

Refugees

Refugee with family