When Madam Mo tries to talk her family up by mentioning a relative who used to be a cultivator, the doors burst open. A young man in his early twenties bursts in, his clothes in disarray and his face painted with garish makeup that makes him look like a hanged corpse. 

"That's me! You must be talking about me, right? I'm the only one here who used to be a cultivator." 

Don't smile don't smile don't smile...

"Interesting!" she says, brightly, and like she's definitely not contemplating murder. She senses Madame Mo does not like this man. Therefore... "Have you noticed anything that'd be useful here, then?"

"Huh? No, sorry, I've been locked away and haven't seen anything." 

"What--get rid of him!" Madam Mo hisses to the servants. Her husband gets up to drag the lunatic out himself, but instead of standing his ground he drops to the floor and digs his fingers into the floorboards. The husband tries to drag him away anyway, face flushing, but his grip is too strong. Several servants start approaching the pair of them. 

"Oh! Dragging him out seems rather rude!" she says, feigning shock to disguise her glee. Oh yeah Madame Mo definitely hates this guy.

"I'm so sorry young masters, it's only that my nephew is completely insane," she says, bowing to the Lan disciples. "It's really for his own good that he must leave." 

"I'm not going to leave until my cousin gives back what he stole from me!" he announces. 

"What? Me, steal from you? What a joke!" his much better dressed cousin protests. 

"Fine, you didn't steal, you robbed," the so-called lunatic asserts. "You hit me and took my things!" 

Mo Ziyuan starts towards the intruder angrily. 

"That seems a rather serious accusation!" she says, hiding her amusement slightly less well. "Surely if Mo Ziyuan did such a thing, he would apologize?"

"Of course he would, if he had, which he didn't!" Madam Mo asserts. Mo Ziyuan kicks his cousin and falls over; "Mo Xuanyu" rips his shirt open to reveal a nasty foot-shaped bruise. 

"You just came here to make a big scene!" Madam Mo accuses accurately. 

"I just came to get my stuff back, is that so wrong?" "Mo Xuanyu" demands. 

"Well! This seems rather credible to me!" she says. "Perhaps Mo Ziyuan can return anything he took, and apologize, and we can all get on with what we're here for?"

Mo Ziyuan, not having left the things he stole from his cousin in any kind of shape to return them, starts sweating. "This is ridiculous! I can't believe you're accepting the word of a lunatic like that!" 

"I may be a lunatic, but you're the one who snuck into the room of a known cutsleeve in the middle of the night to steal. Think of your reputation!" 

"What--he's your cousin!" Madam Mo exclaimed. 

"So? He's the one who did it, don't blame me for calling him out! You can do what you like with your own reputation," he adds to his "cousin," "but I want to find a good man someday!"

Mo Ziyuan sees red. He picks up a chair and swings it at his cousin, who dodges out of the way to let it shatter against the floor. 

Not laughing is VERY HARD.

"Don't we all." She sighs, dramatically. "And Mo Ziyuan! Please desist from this shameful behavior! Surely a lunatic's words shouldn't have such an effect on you..."

To Mo Xuanyu: "I know you feel very wronged, but there is a serious situation going on, and perhaps it's better to resolve this affair later?"

"Ah, well, if you say it, Lan-guniang, how can I disoblige?" he asks, and bows, and flees out the door, with Mo Ziyuan barely restrained from pursuit by his father. 

Now, with that bit of entertainment temporarily resolved, back to more serious business...

She calms down the Mo family a bit, though she teases them some about their 'cultivator' in there, and ends up taking over the West Courtyard, directing the other Lan disciples to carefully place spirit-attracting flags around it, so the problem should come directly to them.

Mo Xuanyu next comes to her attention having stolen one of the flags Jingyi was setting up, playing keep-away while Jingyi tries to get it back. 

Dude, seriously, please don't.

She intervenes, sternly, and demands Mo Xuanyu give the flag back.

"Ah, it's just a flag, so what's the big deal?" he demands, and throws it down and runs off again. 

Sigh.

The guy's funny... And a bit weird, but that fits with 'lunatic.'

She puts the flag back where it goes, and tells the other junior disciples to keep a better eye on them next time.

Unfortunately, they don't manage to keep a good enough eye on them that Mo Ziyuan doesn't manage to steal one in the middle of the night before he turns up dead, shriveled and missing an arm the next morning. 

Okay that is slightly a problem!

They definitely missed something. She wants the disciples to keep together in at least pairs, and gather the household together - see if anyone's injured, behaving strangely, missing, or also dead. (Do not gather anyone injured or behaving strangely with the others.)

It's sort of hard to tell if anyone's behaving strangely because a lot of them are freaking out!

Keep them calm, keep them separated a bit from each other, keep everyone under observation...

Where is Mo Xuanyu?

Over here, having accusations flung at him by his aunt. 

She quasi-politely separates them, and, out of easy eavesdropping by the aunt, would like to know, non-accusingly, if he saw anything?

"Well, I didn't see anything last night or anything, but..." he fishes the spirit attraction flag out of Mo Ziyuan's robes. 

Sigh. "That's part of why we were saying not to mess with those, you know. We should get that out away from everyone else..."

Madam Mo takes this opportunity to start shrieking at Lan Fengli for not protecting her son.