The Great Underwater Wall is a People's Republic of China military program to monitor submarine, surface, and aerial vehicle activity in the seas adjacent to China. The submarine monitoring system in the South China Sea, is called the "Great Underwater Wall" (Chinese: 水下长城) and the "Underwater Monitoring System" (Chinese: 水下监听系统) in Chinese media.
The Great Underwater Wall is a People's Republic of China military program to monitor submarine, surface, and aerial vehicle activity in the seas adjacent to China. The submarine monitoring system in the South China Sea, is called the "Great Underwater Wall" (Chinese: 水下长城) and the "Underwater Monitoring System" (Chinese: 水下监听系统) in Chinese media.
Source: Wikipedia "Great Underwater Wall" · CC BY-SA 4.0
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