要罵解放軍──禁航區劃設太大

Assumed distribution and size of restricted Areas (black) in China. Restricted areas block 8% of the whole Chinese air space, but 70% of the eastern part, where the major air traffic takes place. The color map indicates overfly charges of 1 e per kilometer (red) and 0.5 e per kilometer (yellow).

設想的中國限制區域（黑色）的分佈和大小。禁區封鎖了整個中國領空的8%，但封鎖了主要空中交通所在的東部地區70%。彩色圖表示每公里1 e（紅色）和每公里0.5 e（黃色）的飛越費用。https://www.researchgate.net/figure/Assumed-distribution-and-size-of-restricted-Areas-black-in-China-Restricted-areas_fig3_356102414