China should take military action correspondent with the provocation of the Terminal High Altitude Area Defense (THAAD) system in South Korea, which is expected to reach combat capability in mid-May, according to Chinese missile expert and quantum defense scientist Yang Chengjun.

On April 26, Yang told the Global Times that the THAAD system is expected to be combat-ready by the middle of next month. In addition to ancillary facilities, point measurements will be taken to confirm the longitude and latitude of its launch point, as well as astronomical parameters such as elevation, gravity, wind power, humidity and rainfall.

Located on the coast, the system calls for high precision and insulation. Yang said THAAD is mainly commanded vertically by U.S.-based organizations and military bases stationed in South Korea, though it needs support for security, calculations and other functions from U.S. allies.

North Korea's 8,000 guns, and especially its 3,000 ballistic missiles, are the largest threat that South Korea faces. The THAAD system will not be able to neutralize these missiles if Pyongyang launches them at a large scale. Yang believes that the real intention of the U.S. in deploying THAAD is to threaten northern, northeastern and some parts of eastern China, as well as Russia's far east region.

Yang told the Global Times that China should offer a military response in addition to political and diplomatic measures. He argued that China's military deployment would unquestionably be a deterrence for the U.S. and South Korea.

Yang's suggestion is that China make strategic adjustments, such as enhancing its defense through the X-band radar system, infrared system and related satellite systems. He said China should take military action in reconnaissance blind zones, strengthen deployment in northeast China and make full military preparations for various contingencies.