It benefits China strategically and economically. Long term military wise, if Russia remains an active land mass threat to Europe, much of Europe and US will build a military for armed land conflict in Europe while leaving their strategic initiatives in the Pacific and Indian ocean underinvested leaving China to grow its power there. In the same way China is using Pakistan and the occasional skirmish in the useless high altitude Himalayas to keep India’s military focused on building a land-based military while leaving Indian ocean and its naval fleets underinvested.
It benefits China strategically and economically. Long term military wise, if Russia remains an active land mass threat to Europe, much of Europe and US will build a military for armed land conflict in Europe while leaving their strategic initiatives in the Pacific and Indian ocean underinvested leaving China to grow its power there. In the same way China is using Pakistan and the occasional skirmish in the useless high altitude Himalayas to keep India’s military focused on building a land-based military while leaving Indian ocean and its naval fleets underinvested.