免费流量？Free Wireless Data to Consumers?

Youku, one of the most popular Chinese video hosting services, recently announced that China Mobile 4G users in Beijing and Guangdong can watch videos on Youku without spending internet data flow during this spring festival holiday. What's more, Sina Weibo users in Beijing, Guangdong and Jiangsu can enjoy free service on the day of the lunar New Year's Eve. Chinese Internet security software provider 360 also announced that China Telecom users in Jiangsu can download some apps free of wireless data. By far, data free apps include Plants vs Zombie 2, Pocket Ninja, Master Sword, a movie and TV play app produced by 360 and a mobile phone security app produced by 360. Free always sound good. But exactly how does it work?