Photos taken on October 27 show China Southern Airlines' aviation food production base at the Beijing Daxing International Airport. Spanning 69.3 square kilometers, it is the largest aviation food production base in Asia. (Photos: VCG)

Photos taken on October 27 show China Southern Airlines' aviation food production base at the Beijing Daxing International Airport. Spanning 69.3 square kilometers, it is the largest aviation food production base in Asia.