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Surveillance Duty

Summary:

Modern AU
The Cloud Recesses Coastal Resort hosts the most prestigious cultivation conference in the world.
Wei Wuxian attends as a rogue cultivator delegate.
Lan Wangji is assigned to keep an eye on him.
Lan Wangji takes this assignment far more seriously than anyone anticipated…😉

Chapter 1: Observation

Chapter Text

The Cloud Recesses Coastal Resort was, by every measurable standard, an architectural triumph.
A multi-billion-dollar cultivation hospitality complex built for the modern era: spiritual conference halls, seawater meditation pools, wave-controlled training lagoons, and zen private villas designed for sect leaders who preferred eco-luxury with their enlightenment.
Like every Lan family endeavor, it was immaculate.
And at its center stood Lan Xichen.
Calm. Diplomatic. Smiling.
As always.
He reviewed the staffing rotations on a floating tablet while standing in the upper observation hall overlooking the wave pool complex. Below, cultivators in casual robes and conference badges drifted through artificial tides and glowing water channels.
A peaceful chaos.
Beside him stood his brother.
Lan Wangji.
Or rather—Hanguang-Jun in a setting that looked like it had been designed specifically to offend him.
White robes immaculate. Forehead ribbon perfectly aligned. Expression as still as carved jade.
Except Lan Xichen noticed something unusual.
Lan Wangji was not looking at the resort grounds.
He was looking at someone.
Lan Xichen followed his gaze.
A winsome young man with a lithe, toned body showing an obscene amount of skin stood barefoot at the edge of the wave pool in black-and-red board shorts. Arms covered in delicate sigil and talisman symbol tattoos, his long black hair tied in a loose ponytail with a red hair tie, laughing as he argued with three cultivators over whether “emotional resonance theory applied to pool float aesthetics.”
He was brash and boisterous.
Unapologetically so.
He gestured wildly while speaking, silver eyes bright with mischief, as if the entire world existed for his amusement alone.
Lan Xichen’s smile softened.
Ah.
So that was him.
Wei Wuxian.
The rogue cultivator delegate.
The “problem genius” who had flaunted half the conference registration rules and still somehow had been invited back.
Lan Wangji did not blink.
Lan Xichen hummed thoughtfully.
“Wangji,” he said gently, “you are staring.”
“Ridiculous,” Lan Wangji replied immediately.
Lan Xichen smiled.
“You have not moved your gaze for seventeen seconds.”
Silence.
Lan Wangji finally looked away.
“That is irrelevant.”
Lan Xichen’s eyes drifted back to Wei Wuxian.
Who at that exact moment jumped fully into the wave pool, laughing like he had never known restraint in his life.
Water exploded around him.
He surfaced grinning.
Bright.
Alive.
Captivating.
Uncontrolled in a way the Lan family rarely tolerated—and even more rarely understood.
Lan Xichen folded his hands behind his back.
“I see,” he said softly.
Lan Wangji did not respond.
But his jaw tightened.
Lan Xichen smiled again.
“Wangji,” he said lightly, “you will be assisting at the wave pool bar for the duration of the conference.”
Lan Wangji turned slightly.
That was the first real reaction.
“That is not a good use of my time.”
“I disagree.”
A pause.
Lan Wangji’s voice sharpened slightly. “Why?”
Lan Xichen’s smile remained serene.
“Because,” he said, “maybe it is safer for you to keep an eye on Wei Wuxian.”
Lan Wangji did not respond.
Lan Xichen continued gently, “That station receives the highest frequency of Wei Wuxian’s visits.”
Silence.
Lan Wangji’s expression did not change.
But something behind it did.
Lan Xichen clasped his hands together.
“Think of it as… surveillance.”
Lan Wangji stared at him.
Lan Xichen simply smiled.
“I am your brother,” he said calmly. “Help me with this.”
Lan Wangji turned and left without another word.
Lan Xichen watched him go.
Then sighed softly.
“…Good luck, Wei Wuxian,” he smiled to himself.

*****

Wei Wuxian had never trusted resorts.
They were too pristine.
Too controlled.
Too full of people pretending they were relaxed.
But this one—
this one was interesting.
Because someone clearly had money.
Original bloodline cultivation clan money.
He stood at the edge of the wave pool, watching artificial tides roll in perfect rhythm while cultivators floated and sparred on surfboards enchanted with spiritual stabilization arrays.
“This is either genius,” he muttered, “or criminally excessive.”
A passing delegate frowned at him.
Wei Wuxian smiled sweetly.
“Both,” he clarified.
Then he saw the bar.
And he saw him.
Wei Wuxian stopped thinking.
For a full second.
That alone was unusual.
Because nothing about him looked like someone who should be standing behind a neon-lit wave pool bar blending frozen cocktails for sunburnt cultivators in designer resort robes.
Long dark silky hair.
Forehead ribbon.
Icy stoic stillness.
Wei Wuxian narrowed his eyes.
“Oh,” he said softly. “That’s unfair.”
Because the man was not just tall and broad-shouldered, elegantly handsome with piercing golden eyes and chiseled face.
He was ethereal in a way that felt almost aggressive.
Lan Zhan looked like he belonged in a frost-covered sword tomb, not a tropical luxury paradise where the air smelled faintly of salt, sunscreen, and overpriced mango desserts.

*****

Wei Wuxian leaned across the polished counter, elbows resting lightly on it, grin already in place like it had been carved there permanently.
“One Emperor’s Smile frozen slushie,” he said brightly. “Extra sweet. Extra strong. And extra… you know.”

Lan Wangji’s eyes flicked up.
Cold. Direct.
A gaze like still winter water.
“No alcohol modifications,” he said.

Wei Wuxian blinked. “What?”

Lan Wangji was already preparing the machine. “House policy.”

“That’s outrageous,” Wei Wuxian said, offended in the tone of someone who had never respected policy in his life. “This is a cultivation conference. People are literally debating sword theory and spiritual resonance ratios. And I can’t even get a properly enhanced frozen Emperor’s Smile?”

Lan Wangji didn’t respond.
He never really did, not in the way Wei Wuxian wanted—loudly, emotionally, dramatically.
Instead, he worked.
Which was somehow worse.
Because the way he worked was infuriatingly controlled. Sleeves moved back just enough to expose strong, sculpted forearms. Hands steady, precise. Every movement economical, like excess motion was a personal moral failure.

Wei Wuxian leaned closer.
“You know,” he said conversationally, “if you keep ignoring me, I might think you don’t like me.”

Lan Wangji paused for exactly half a second.
Then: “I do not know you.”

Wei Wuxian gasped, offended again. “We’ve spoken three times.”

“Orders do not constitute knowing.”

“That’s harsh,” Wei Wuxian teased, placing a hand dramatically over his heart. “I thought we had something special.”

Lan Wangji slid the drink across the counter.
Perfectly frozen. Deep crimson slush swirling like liquid rubies trapped in ice.
Wei Wuxian took it, fingers brushing Lan Wangji’s for half a second.
A static jolt—barely there, but enough that Lan Wangji withdrew immediately.
Too quickly.
Too carefully.
Wei Wuxian noticed.
Of course he did.
He always noticed things other people tried very hard not to show.
He smiled wider.

“Put it on room 1408,” he said casually.

Lan Wangji’s gaze sharpened. “You are not a registered guest.”

“I am,” Wei Wuxian said. “Conference delegate. Rogue cultivator track. Very prestigious.”

“That is not—”

Wei Wuxian leaned in, voice dropping conspiratorially. “Gege, are you interrogating me? Because if so, I should warn you, I am known for resisting authority.”

A beat.
Then Lan Wangji said flatly, “Room charges require ID confirmation.”

Wei Wuxian slid his badge across the counter like a gambler offering a final bet.

Lan Wangji looked at it.
Looked at him.
Looked back at it.
Something unreadable flickered across his face.
Then he processed the charge.

Wei Wuxian grinned victoriously. “You should smile more. It would really elevate the customer experience.”

“I am not in customer service,” Lan Wangji said.

Wei Wuxian tilted his head. “And yet here you are…Serving me drinks.”

A pause.
“…It is my duty.”

“That sounds like fate,” Wei Wuxian said dramatically.

Lan Wangji did not respond, but his jaw tightened almost imperceptibly.

Wei Wuxian took that as encouragement.

*****

By the next visit, Lan Wangji had already decided something unfortunate:
Wei Wuxian was a problem.
Not in the usual sense of disruptive guests, drunk cultivators, or people trying to ride the wave pool slides in forbidden sword formations.
Wei Wuxian was worse.
He was fascinatingly cheerful.
He kept coming back.
And he perceived things…
Things Lan Wangji preferred remained unnoticed.
The half-second hesitation before an answer.
A glance held too long.
A reaction buried too slowly.
Wei Wuxian saw them all.
And smiled every time.

“What’s your name again?” Wei Wuxian asked, leaning over the counter like gravity had stopped applying to him.

Lan Wangji did not look up. “You know it.”

“I like hearing you say it,” Wei Wuxian said shamelessly.

Silence.
Then, colder: “Emperor’s Smile?”

Wei Wuxian sighed. “Yes, yes. The usual. Though I have to say, your version is tragically non-lethal.”

Lan Wangji prepared it.

Wei Wuxian watched him.

There was something almost hypnotic about it—the precision, the restraint. Like everything Lan Wangji did was governed by rules no one else could see.

“You’re from one of the big cultivation families, aren’t you?” Wei Wuxian asked.

Lan Wangji did not answer.

Wei Wuxian hummed. “That explains the aura. Very ‘I have never committed a single sin in my life and it makes me insufferable’ energy.”

A flicker.
Just that.

But Wei Wuxian caught it.

Amusement.
Tiny. Controlled. Immediately buried.

Wei Wuxian leaned in further. “Ah. So you can react.”

“Drink,” Lan Wangji said, sliding it over.

Wei Wuxian took it, then tapped the counter instead of leaving.
“I’m going to a panel after this,” he said. “Something about spiritual energy flow optimization in modern environments. Very boring. You should come.”

“I am working.”

Wei Wuxian nodded seriously. “Work can wait. Destiny cannot.”

Lan Wangji stared at him.

Wei Wuxian smiled.
“Room 1408 still works,” he added with a wink.

Something in Lan Wangji’s expression tightened again—like a string pulled just past comfort.

Wei Wuxian left before he could say anything else.

But he felt it.
Lan Wangji’s intense stare following him longer than necessary...

*****

Wei Wuxian returned every day.
Always the same order. Always the same flirty tone.
Always the same edging to boundaries he should not cross.
Lan Wangji noticed patterns.
Frequency increased in late afternoon.
Behavior escalated when Lan Wangji was directly engaged with other guests.
He interrupted without interrupting.
Existed without asking permission.
Lan Wangji did not understand why it mattered.
And yet—
it did.

On the third day, Wei Wuxian leaned across the counter.
“You memorized my drink order,” he said.
“I have not,” Lan Wangji replied.
Wei Wuxian pointed.
“That one.”
Lan Wangji paused.
“…Coincidence.”
Wei Wuxian grinned.
“Sure.”
Then, softer:
“You’re cute when you lie.”
Lan Wangji stopped.

Wei Wuxian immediately continued, like nothing happened.
“Room 1408 still mine, by the way.”

Lan Wangji looked at him, ears turning pink.
Wei Wuxian smiled.
“Just saying.”