Unable to accumulate enough military Lirang, if you think of rebelling outright, you will be taken care of directly, so these clans have now fully realised that their good days are gone for good. Knowing full well that it's impossible to return to the past, they can only strengthen their own power to survive this calamity.
As for what comes after this disaster, the strength of their families, since it's impossible to return to the past, they can only strive to place their clan members into the military and official positions. Although it's not possible to return to the past, at the very least they need to ensure they have the greatest say within the military.
While the number of common people is there, after all, the resources of both sides are not quite the same, so it's relatively difficult for the common people to stand out.