What is a migratory bird holiday?

Migratory bird vacation, also known as sojourning or amphibious life, is a way of life that has emerged in China in recent years. For example, some middle-aged and elderly people in northern China are used to spending their holidays in Hainan and Yunnan in winter when the temperature is low and the air quality is poor, enjoying the warm and humid climate and returning to their homes in the north before the hot summer comes. This twice-yearly migration is similar to that of migratory birds, hence the name. It can be predicted that with the improvement of per capita income and quality of life, migratory birds will put forward higher quality requirements for living abroad.