An Airlines Operation Center (AOC) is a decision-making center and the operation command center of an airline company. It could be regarded as the "brain" of an airline. CGTN reporter brings you a closer look at the Airlines Operation Center of China Southern Airlines at Beijing Daxing International Airport. It is the largest AOC in Asia. The construction area of this center is over 3,000 square meters, five times of that at the Beijing Capital International Airport.