It might be a one-two, China scheme with North Korea, which as been silent recently, to create a distraction. Then China will address Taiwan. I think there is several windows, key is before November, else before January. Lastly after January, depends on who wins in November.
Three windows is logically a good way to break it down - 1) between now and election day, 2) between election day and inauguration day, and 3) after inauguration day. If they move before election day it will be very damaging to Biden, politically, so I don’t see that as the likely time frame unless it’s done as part of some larger scheme to suspend elections because of a “national emergency”. But that would be a hard thing to sell, so I don’t think it’s very likely.
things to get done before trump