Updated On: 28 December, 2018 10:00 AM IST | Beijing | Agencies
S-400 is known as Russia's most advanced long-range surface-to-air missile defence system with China being its first foreign buyer

The S-400 can detect and shoot down targets up to 600 kms away
China has successfully tested the advanced S-400 air defence system imported from Russia for which India also signed-up recently despite concerns over threat of sanctions from the US.
It was the first time the People's Liberation Army (PLA) tested the system since it received the last shipments of the weaponry from Russia in July under a $3 billion contract signed in 2015.