Chinese students studying here weigh in on Hong Kong protests
Observing carefully the conflict between China and Hong Kong, is Taiwan. Just like Hong Kong, Taiwan is not considered to be an independent sovereignty by mainland China.
Chinese students buy in the US, but sell in China to support themselves
The Chinese government imposes tariffs on certain imported goods, so the retail prices are much higher in China than here. Some e students saw the opportunity and buy goods here and sell them to China at a markup.