Chinese American directors' "Free Solo" claims Oscars Best Documentary Feature

(L-R) Elizabeth Chai Vasarhelyi, Jimmy Chin, Evan Hayes and Shannon Dill, winners of the Best Documentary Feature award for "Free Solo," pose in the press room during the 91th Academy Awards at the Dolby Theater in Los Angeles, the United States, on Feb. 24, 2019. (Xinhua/Li Ying)