All China has to do, imo, is to continue doing what it has been doing, and not take the bait of war thrown by the Americans. Americans love war. They are good at destroying, but not very good at developing without it. Restrict their ability to wage war globally and they will crumble. Their entire economy is based on the war machine and the resultant chaos.
What I'm not sure of is whether the non-interference policy of China is good or bad. Ideally, it is better not to interfere in foreign politics. But it just so happens that China's enemies interfere everywhere and turn those countries into mini obstacles for China. Take Pakistan for example - despite having China as it's closest ally, it is infested with American and European interference in every sector and faction. Have you noticed: whenever a Pakistani leader is in trouble, they run to and seek assistance from US/UK, but not China?
I used to support total non-interventionalism, now I'm not so sure. I think China should at least be able to prevent US regime change operations over the world. Otherwise, whenever China sign a contract and someone get couped and nothing gets done. I feel especially strongly about the Imran Khan coup