30 December 2013. In the province of Yunnan (south-western part of China) had to cancel more than a hundred flights, a few hundred more to postpone. The main cause of failure was a thick fog. Because of the fog, the visibility of the runway decreased and thousands of passengers are waiting for their aircraft to depart. Failures in the flight schedule are observed for the third day.

The airport administration organizes hot food and drinks for people. Dispatchers constantly inform people about the condition of their flights.