[spiralx]

As of 2021 Russia supplied 15% of China's oil and 6% of it's natural gas, and those pipelines are a) for gas, not oil, and b) increase from 38 Bcm to 88 Bcm, while total imports via pipe are 2,000 Bcm, which c) doesn't account for LNG imports via ship.

https://www.eia.gov/international/analysis/country/CHN

In other words, Russian pipelines supply very little of China's energy needs, and that's not going to change anytime soon. The only thing that could really change that is global warming enabling Russia to ship fossil fuels from its north coast to China.