A train attendant hands out national flag of China to passengers to celebrate the National Day and the Mid-Autumn Festival on Fuxing bullet train G6131 from Yueyang in central China''s Hunan Province to Guangzhou in south China''s Guangdong Province, Oct. 1, 2020. (Xinhua/Chen Sihan)

A train attendant decorates a carriage to celebrate the National Day and the Mid-Autumn Festival on Fuxing bullet train G6131 from Yueyang in central China''s Hunan Province to Guangzhou in south China''s Guangdong Province, Oct. 1, 2020. (Xinhua/Chen Sihan)

Train attendants perform for passengers to celebrate the National Day and the Mid-Autumn Festival on Fuxing bullet train G6131 from Yueyang in central China''s Hunan Province to Guangzhou in south China''s Guangdong Province, Oct. 1, 2020. (Xinhua/Chen Sihan)

A train attendant hands out a mooncake to a passenger to celebrate the National Day and the Mid-Autumn Festival on Fuxing bullet train G6131 from Yueyang in central China''s Hunan Province to Guangzhou in south China''s Guangdong Province, Oct. 1, 2020. (Xinhua/Chen Sihan)