Exactly how difficult it is to go home for the Spring Festival?

Something big happened on Jan 8th. It is the start of the largest scaled as well as periodical migration in human history – the Chinese spring transport, which was, is and always will be the dominating theme of Chinese media for the next 40 days.
It is predicted that during the 40-day long transport season, there will be over 3.15 billion passenger flow, breaking another historical record set by 2011 with 2.85 billion(sina). To help you get a better picture of the situation, according to Netease, it is like the whole population of China moves twice.

Source: ChinaHush