Tourists visit the Zhaochuan Steel Factory, a filming location of the movie "Wolf Warrior 2", in Zhangjiakou City, north China's Hebei Province, Aug. 17, 2017. Topping the Chinese box office with revenue of 4.7 billion yuan (700 million U.S.dollars) within 20 days, China's latest action movie "Wolf Warrior 2" is dominating the country's big screens with its patriotic storyline. (Xinhua/Chen Xiaodong)