All of the Act 3 stages in the Wu Musou Mode as Gan Ning. The goal of this video was to record what happens if you beat Assault on Liu Biao before Yuan Shao shows up as reinforcements, and then play Campaign for the Wu Territory. Because of that, I had to clear the first stage quickly so I didn't go after all the reinforcements just to make sure I had plenty of time.
In Wu Territory, after you've unlocked Taishi Ci, he no longer appears as an enemy in this stage in Musou Mode and his spot is instead replaced with Zhang Yi, a generic who doesn't defect or have any cutscenes. This stage has a lot more going on if you haven't unlocked Taishi Ci lol. Anyways, after Zhang Yi/Taishi Ci is defeated, then reinforcements show up. Normally it's just Wang Lang and Yan Baihu, with a large number of troops, but if you evaded Yuan Shao in the last battle, he'll show up with a MASSIVE number of troops, his two best officers, and max morale. Sun Ce says to ignore the reinforcements, but if you do that, they'll tear through you. You want to at least fight their troops for a while to lower their morale so your allies can last. I tried to keep Yuan Shao alive just for the off-chance he might have more lines if I reached Liu Yong with him still alive, but I seem to have lowered his morale too much and he died to Da Qiao, of all people.
Unification of Jiang Dong has a slight change if you completed Wu Territory where Zhou Yu mentions luring the enemy in with the supplies they got from Liu Yong. The game doesn't really explain this in any way, but what this does is place additional Musou Wine and Dim Sum in the supply base, in addition to the ones on the map normally. I searched the supply base thoroughly just to make sure I didn't miss anything else. There's also two item crates in the boxes there, but I'm not sure if those are always there or not.