Only in ultraleft and trotskyist circles is the export of revolution via warfare considered a requirement.

Also this ignores the two main reasons for the USSR’s downfall: the cold war arms race, and de-linking from the world economy. This:

• Required an enormous amount of resources to be dedicated solely to the defense sector.
• Took away vital brainpower that could’ve been used in other areas.
• Alienated potential trade partners and forced the Eastern bloc to “de-link” from the world economy, severely limiting not only its trade potential, but its ability to absorb technology and expertise developed in the imperialist countries.

The fact that China adheres strictly to non-interventionism, refuses to get embroiled in conflicts, and refuses to take the bait, means they can focus on the main task of socialism: building up its productive forces to eliminate poverty, and building peaceful relationships with all countries.

I suggest reading this article also. Relevant passage:

Other contradictions include those which result from the strict non-interference in the affairs of foreign states, which has characterised Chinese foreign policy for thousands of years, and the prioritising of larger international trade relationships over ideological conflicts. One example is unscrupulous business deals with right-wing or even fascist governments, such as Saudi Arabia or Israel. The “live and let live” ethic of this modus operandi even applies to ideological enemies: China also trades with the biggest terrorist organisation in the world, the USA, without even criticising its long list of illegal wars and heinous crimes against humanity. Another is not supporting local leftist struggles in partner nations, such as guerrilla Maoist insurrections in SE Asia, if it might jeopardise trade relations with state entities. If the temporary “ethical net-losses” of these contradictions lead to larger “net-gains” and positive results in the future, they are calculated as worthwhile or unavoidable.

These myopic and short-sighted “left com” or “ultra-left” types love to denounce modern China as a betrayal of the socialism project, without considering that it is the failure of the Western left to do successful revolutions which made it necessary for existing socialist states to adapt to the global conditions of entrenched neo-liberal capitalism.The struggle for global socialisation and eventually, communisation, via peaceful trade, rather than violent revolution (at least for now), means that it is in the interest of the CCP to improve conditions for workers, fix labor issues, fight pollution, increase equality, and address uneven development, on its own terms, and according to its plans. But at the same time, grass roots labor movements are not only allowed, but are encouraged. The vast majority of wildcat strikes against private corporations in China are not suppressed, as they are under capitalist regimes. The ones which are suppressed mostly belong to the category of trouble makers with ties to malignant imperialist entities, as part of destabilisation efforts. Social unrest at home is not only dangerous for stability, but hinders China’s ability to beat capitalists at their own game. It is a long and treacherous game on a grand global chessboard shaped by layers of devastating historical injustice and the cascading chaos produced by exploitative and oppressive processes, and in order to win, relatively minor contradictions and problematic particularities must not obscure or impede the realisation of larger goals.