The annual massive travel rush for the Lunar New Year is underway in China. The 40-day travel rush, also known as chunyun, is the largest annual human migration in the world. Hundreds of millions of people will travel across the country for family reunions and around 3 billion trips will be made before and after the January 25, 2020, Lunar New Year’s Day. But many travellers have also had their plans disrupted by an outbreak of a new coronavirus that forced a transport lockdown in the central…