From Delight in Misery by nirejseki: "There was a period when da-ge’s temper was getting worse and worse, and A-Yao was doing everything he could to irritate him while pretending he’d never done anything wrong in his life, which of course irritated da-ge even more…I honestly thought one of them might try to kill the other. But then I ended up having a small fit while the two of them were bickering, and by the time I recovered they’d somehow managed to get over the worst of it.” Lan Wangji raised his eyebrows. “I think they realized that I couldn’t handle losing either of them at that time,” Lan Xichen said with a shrug, indicating clearly that the fit in question was not a subject that was open for discussion. “I’d had the abrupt realization that I really might never see you again, if not even they could locate you...it really was a surprise that Jiang Cheng turned out to be such an accomplished liar.” What did that "small fit" look like?