It's China's great escape.<br/> <br />Hundreds of millions of people across China rush home for the Chinese New Year holiday in the biggest human migration on the planet.<br/> <br />Beijing's Ministry of Transport expects more than three billion trips, by train, plane and road, will be made over the 40 day travel period.<br/> <br />Although most journeys are made by car, the biggest crowds are seen at railway stations like this one.<br/> <br />Tickets are always scarce.<br/> <br />(SOUNDBITE) (Mandarin) 25-YEAR-OLD DOCTOR, TAI WANBO, SAYING:<br/> <br />"It is very difficult to buy tickets this year, same as every year. Thankfully I managed to get one, so I can arrive home on the eve of the Lunar New Year. The holiday arrangement changed this year, so I still had to work for half of the day before getting off. I am so happy to go home after working outside for a year."<br/> <br />Many workers have had to spend several days queuing for a coveted ticket to get them home.<br/> <br />And many will have to endure long, uncomfortab
