Even if the Demon Kings are unwilling, they could find some with dwindling lifespans. The Old Tusi must have a more comprehensive plan. Talking a bit might change a mind or two, especially on the side of the Flood Dragon. Having lost in the Huai River, Yellow Sand is also an option.
Thirdly, both the Great Snow Mountain and the Overseas Countries are viable. The Great Snow Mountain is closely connected with the Northern Court, as previously mentioned. The Northern Court would certainly want to intervene. They cannot do so openly and will likely rely on the Great Snow Mountain, so we just need to fan the flames.
Combining these three efforts, attacking from three directions, if things go smoothly, at least seven or eight Young Dragons could join forces. In this situation, the Southern Frontier could take advantage, and Dashun would certainly be defeated. If things do not go well, with just two or three, it would still be more than enough to cause trouble for Dashun."
