The campaign turns on a narrow mobilization and seizure window

The proposed best case for China requires mobilization in under forty-eight hours and control of Taiwan within roughly seventy-two hours. These are personal estimates of the timing that would give an invasion the best chance of success. The preferred scenario moves from apparent inactivity to a takeover within about a week. A slower buildup gives observers time to detect the operation and outside forces time to move, while prolonged fighting creates further opportunities for reinforcement.