Daughters of Lynn Berat talk with their Chinese teacher Lin (2nd L) at Lin's house in Bernards of New Jersey, the United States, July 13, 2019. Lynn Berat, who holds two PhDs from Yale University, kind of "forced" her nine daughters to learn Mandarin from infancy in a bid to have them well-prepared to be what she called "citizens of the world." (Xinhua/Wang Ying)