That is pretty massive. But I think Nornickel had already issued panda bonds.
Currently interest rates in China are much lower than in Russia. And a lot of those Russian energy companies export to China. They will need capital for large projects like Power of Siberia 2 or Vostok Oil. This will help a lot.
As noted in the link I provided (and yours too), the difference is that Nornickel issued them on the Moscow Exchange. The upcoming bonds will be issued in the Chinese domestic market.