Is, ah, anyone taking seriously the idea that this is a war that could be lost? Like, with the new allies the cloud barbarians are poised to do more than just wreck a province like last invasion. And that means that Argent gets evacuated or destroyed.
Either characters on story or people in thread, question applies to both.
Maybe, but not quickly. The Argent sect does, after all, have two Prism cultivators. One is seriously old and the other unwilling to put a lot of work into the conflict, but the fact they exist means a decisive clash shouldn't really be an option on the table for the barbarians. If they're a serious dedicated force, the fighting can be expected to drag out over years or even decades. Imperial forces on a total war footing are pretty formidable too. The barbarians are a threat via mobility and force concentration, but those advantages start to diminish in the face of a united Imperial front.
One concern is the lack of slack for other provinces to lend to the aid of Emerald Seas war woes, in extremus. Western territories is at constant existential war with the environment and don't like Emerald Seas right now anyway. Thousand Lakes lost a huge number of its established noble holdings and is pretty well obligated to invest any bounty from opening trade into their recolonization efforts, which further obligates their standing forces of powerful nobles to be ready at hand to deal with stirred up spirits and the like that fresh vassals are incapable of putting down. Alabaster Sands may or may not have its shores secure, but they're being stand-offish with Shenhua's regime and don't approve of Bai port building, which she is deliberately aiding. Golden Fields is focused on nursing their poisoned environment and also ash zombies. Savage Seas doesn't have people to spare. Ebon Rivers isn't facing any dangers we're aware of and might actually be willing to throw some people at a barbarian problem, but garrisoning Zheng sounds like it inherently introduces decades-long issues to the region they're housed, and I'm not sure Shenhua would be up for that.
Basically, extra-provincial help, if needed, is going to source most prominently from Heavenly Peaks and the Throne itself. Now, the good news here is they're actually obligated to support the Great Sects, being projects of the throne. We can expect Imperial reinforcement in some capacity pretty early in the conflict. Materials, Throne-sponsored supply agreements, easing of procurement red tape, and such at first. Direct reinforcement with central soldiery seems like it would be a last resort so as to not make the Great Sects look useless and to maintain some rhetorical distinction between the two- Capital militaries being active in the provinces has people on edge and resentful already. If Celestial Peaks shiny bois get sent in, expect it to be on a technically separate negotiation track with Shenhua than the Great Sects themselves.
The
bad news is there's some potential to see a reversal of the previous barbarian invasion response's fundamental flaw. Then, it was a lack of coordination and central direction. Here, there's potential the response gets muddled by power struggles between Cai Shenhua and the Empress over whose toys the Sects really are. We've seen Shenhua lean on the Argent Sect, and we've seen that the Argent Sect is to a degree turning to Shenhua for support it wants that hasn't been coming from the Empress. Now, neither the Empress nor Shenhua are idiots, they aren't going to sabotage things out of petty spite or greed. However, the situation with the sects has got to be legally and politically complicated and delicate; there's no guarantee that actions taken towards their legitimate interests do not disrupt things. The biggest flag for me is that we know Shenhua is limited in her ability to
not improve things. Any tool she uses, like the Great Sects, she is going to want to modify to best suit her designs. While she is running a campaign against rallying barbarian forces to the south, there's a very high chance the Sects fall into her mental category of "tool" even stronger than they already were for her political aims. If the Empress doesn't consider the invasion a true threat, or simply a lesser threat than the consequences of her sway over the Great Sects diminishing, things could get ugly and confusing for them.