Russia is dragging down China's economy:

Presently, a badly weakened Russia represents a significant military and economic drag on China. Both economies are reeling due to collapsing fundamentals and under the weight of massive military expenditures.

Evidence that China's economy reeling:

Beijing is being forced to invest $1.4 trillion domestically “to revive the economy, authorizing local governments to refinance crushing debts that have left some cities unable to pay their bills.”

Russia is forcing China to invest domestically and allow local governments to refinance debts.