On December 1, CAAC announced circuit breaker measures for six inbound flights, which were: KLM Royal Dutch Airlines’ Flight KL831 (Amsterdam-Hangzhou), Lufthansa’s Flight LH720 (Frankfurt to Shenyang), Flight LH728 (Frankfurt to Shanghai) and Flight LH786 (Frankfurt to Qingdao), Eastern Airlines’ Flight MU2574 (Vientiane to Kunming) as well as Southern Airlines’ Flight CZ3070 (Ho Chi Minh to Guangzhou).