Lunar New Year (or Chinese New Year) is one of the world's great annual celebrations. How big? Well, in China people are expected to take around three billion journeys as they travel to join family for festivities. The shebang begins on Saturday January 25 with the Year of the Rat starting the following day, and celebrations continuing for 23 days. Special 'lucky' foods are eaten during this period, sometimes because of their colour (red is lucky) and often because their name is a homonym for words such as 'luck', 'prosperity', 'wealth'.