On December 18, Han Guangzu, director of the Flight Standards Department of the Civil Aviation Administration, said at the press conference of the joint prevention and control mechanism of the State Council that "foreign defense input" has always been the focus of civil aviation epidemic prevention and control work, and the Civil Aviation Administration requires civil aviation units involved in inbound passenger service guarantee to continue to strengthen the control of key links, one is that airlines cooperate with the completion of temperature measurement, code verification and other measures before boarding for remote passengers; the second is in the flight partition management, sub-regional services, it is recommended that passengers use the lavatory in an orderly manner during the flight to minimize unnecessary movement The third is to closely cooperate with the relevant local departments to do a good job in the closed-loop management of the whole process after the entry of passengers; the fourth is to implement the circuit breaker measures in strict accordance with the circuit breaker standards, and since the implementation of the circuit breaker measures to December 16, 2021, a total of 391 circuit breaker measures have been implemented, and 835 circuit breaker flights have been implemented to strictly prevent the import of the epidemic. (Liu Yingqi)