今天是端午
愿你端午节安康 
好运「粽」在身边，幸福满舟围！
It is called Dragon Boat Festival, or Longzhou Jie (龙舟节) in Chinese, because of its close association with dragon boats. Chinese people attach great cultural significance to dragons. The two main activities during the festival are eating zongzi (rice dumplings) and boat races, and both are related to dragons.
Zongzi have long been thrown into rivers as offerings and sacrifices to the Dragon God on lunar month 5 day 5, while dragon boats are used in races traditionally held on this day. So, it is also called the Dragon Boat Festival.