"The ballistic missile defence system is a critical link in our strategic defence, and is also an important chip in the contest between big powers. It makes a world of difference whether you have it or not," PLA researcher Chen Deming said.
The system itself is one of the keys of China's domestic defense capabilities, Deming was quoted as saying by China Radio International (CRI).
Footage of the original test has been released on the heels of the US and South Korea agreeing to deploy the Terminal High Altitude Area Defence (THAAD) anti-missile system before the end of next year.
While the US insists the system is to defend South Korea from possible attacks from North Korea, Chinese officials have condemned its planned deployment, saying it threatens China's security.
China's Foreign MinisterWang Yi has warned his South Korean counterpart the THAAD deployment also diminishes the level of trust between the two countries.