The plane canceled the flight information.

Dear HNA passengers, hello! Due to the failure of landing gear system, your flight HU7829 on February 8th was cancelled. If you need to change your ticket or refund it, please contact the customer service telephone number: 05375559003: (Note: This change is free, and each passenger will be compensated for the flight delay loss according to 300 yuan.

There are too many such tricks, so be careful, just don't be greedy and cheap, no flight will give you a refund because of delay or cancellation!