During the class break, on the bus, in the subway, Jin Xiaorong, 21, a law major at Nankai University, is always busy with her mobile phone. But she’s not using Weibo or WeChat. Instead, she’s memorizing English words through the app Baicizhan. “When I downloaded the app and launched it for the first time, I fell in love with it at once,” Jin says. “It displays an inspirational sentence every time you use it.”