The S-500 is considered a step up from the S-400 Triumf, but would supplement that platform rather than replace it. It has a range of around six hundred kilometers and is reportedly able to target hypersonic cruise missiles as well as stealth aircraft. Analysts claim the S-500 could even target satellites in low-earth orbit.
It could make sense that China would have interest in such a platform as it continues to assert its position in the South China Sea. Where things get a little complicated is that India could be the first potential buyer for the S-500 “Triumfator-M.” Yet the fact that potential adversaries China and India have both expressed interest doesn’t seem to be a serious reason for concern for Russia at this point.