The Russian-Chinese relationship in the Arctic, and very generally, is extremely complex.
The short answer is no, Russia does not see China as a threat—or at least publicly it does not see China as a threat.
Predating Ukraine, and even more so following the invasion of Ukraine 2022, China has become Russia's only major consumer of oil and gas, and the only customer for a lot of Russian goods. This is, of course, developing as western sanctions continue to be applied.
Looking forward, Russia recognizes that it needs China in many different ways—as a source of technology, as a customer and as a source of hard currency.
China's role in Russian foreign policy is only going to increase. China's role in the Russian Arctic is also going to increase, because many of these investments that we talked about, which are tens of billions of dollars, are required to build these oil and gas projects. It's not coming from the west anymore. It can really only come from China.
Looking forward, the linchpin of the Russian-Chinese relationship in the Arctic is going to be the investment in developing all those new resource projects.