With its workforce aging and the balance of economic power shifting away from it and, at the same time, an abnormally large number of single males of military age, and an incredibly weak US President, my analysis of all of this is that China’s leaders are undoubtedly planning a short, very violent, military action that will permanently (meaning for many years or decades) shift the economic balance back to it. Taiwan is undoubtedly going to be the target, and the objective of invading it will not only be to capture it (for the sake of pride, and to break the chain of island bases that the West has surrounding it), but also to break the prestige (what little is left) of the US.
When will this occur? Only God (and perhaps Xi and his top leaders) know the exact date, but I would guesstimate that it will be sometime this summer so that the operation will be done by the late fall except for mopping up. They will have to have our attention diverted and the country even more split than it is now, in order to avoid a unified and effective response. They would undoubtedly hope that the strike was so sudden and successful that it would be a fait accompli.
Whether they would succeed or not is a wholly different matter - but calculations based on one’s own perceived weakness in the future, plus the perception of a presently weak-willed enemy, is the combination that has started a lot of wars.
Note that today or yesterday the guy in charge of Singapore was warning that a war between us and China due to miscalculation was very possible, and that it would (of course) be incredibly destructive.
Of course they already have the latest/greatest from their spies in the US and their friends the Clintons.
But now they'll be able to show how they know how our stuff works without implicating their US spies.