Just to give a little more context to that post, that sensitive border with India was part of an area that was taken by India when China was weaker. So the Chinese now protect what they still have as the Indians took the other part ages ago. Also parts of Siberia were once part of China and the Russians took it off China during the Cultural Revolution when China was too busy to defend it. I know everyone loves the China bad guy image these days thanks to US geopolitical mind games but the world is a bit more complex than that ruse. Actually nobody is the bad guy, humans just take advantage when they can. So basically don’t trust anyone if you can help it and keep an eye on your own backyard which in Australia’s case is covered in US bases.