Actors perform during a rehearsal of off-Broadway show Flying Tiger Flying Away in New York, the United States, on Sept. 5, 2018. Seventy-seven years after the First American Volunteer Group (AVG) joined the Second World War, a play comes to New York City to unfold the stories of the pilots who volunteered to fight shoulder to shoulder with the Chinese people against invaders. The play had its debut on Wednesday night. (Xinhua/Lin Bilin)