WeChat, a Chinese mobile app similar to Facebook that she uses to text and call, is open on her phone. Meili Deng, who emigrated in 2010 to work as a visiting professor of Mandarin at Sacred Heart University, connects through WeChat with 1,500 Chinese living in Puerto Rico. In China, the app is even used to pay online. In Puerto Rico, they use it to communicate with each other and with relatives back in China. WeChat allows up to 500 members per group, and on the island there are three groups of 500 at maximum capacity.