First work day after chinese spring festival.

Today is the first work day after the spring festival. There are some colleagues still don't go to work who still haven't gone back to work. The sSpring festival is the most important festival in cChina. Many people go back to their hometown and stay with their family together, Sso the transport during the spring festival is very crowded. In the past, the ticket of train is very tension  buying a tickt for the train was very stresful because of the "Yellow Cattle"(yellow cattle 是什么？）, but now people can buy the ticket by internet tickets online and through the real-name system.（ real name system是什么？）