An unexpected visitor

In the heart of the temple, a spectacle of raw power and agility unfolded. Thanos, harnessing the might of the space stone, became a blur of motion, teleporting with such speed that it seemed as if he were in multiple places at once. His form, a purple-skinned behemoth wreathed in a malevolent, draconic aura, appeared and disappeared around Fang Yuan, catching him off guard with powerful strikes.

Each hit was like a thunderclap, echoing through the temple. Fang Yuan, with reflexes honed over millenias, twisted and turned, evading the strikes with an otherworldly grace.

From a distance, Lee played his part with precision, launching slashes of energy that streaked across the battlefield like shooting stars. His attacks, while from afar, were targeted and effective, providing the perfect support for the titan's onslaught.

Fang Yuan, feeling the pressure from both sides, roared, "You think mere tricks can best me?" He extended his hands, and a wave of demonic energy surged out, repelling Thanos and forcing Lee to take cover behind a pillar.

Fang Yuan, preoccupied with Thanos' relentless attacks, failed to notice Lee's gradual approach towards his throne. 

"You already have an Infinity Stone," Fang Yuan grunted, narrowly dodging a teleporting punch from Thanos. "I underestimated you."

"I'm very curious as to how you know that but..." Thanos retorted, his voice echoing through the temple. With each word, his power seemed to swell, the mask on his face pulsing with a sinister light.

"You'll answer me once I cut off your head anyway"

Thanos wiped a trickle of blood from his lip and grinned, a wild, untamed look in his eyes. "This is just the beginning," he declared, his voice resonating with a deep, otherworldly timbre. The mask on his face seemed to absorb the ambient light, casting his features into stark relief.

With a burst of mobility granted by the space stone, Thanos reappeared above Fang Yuan, his fist descending like a meteor. Fang Yuan looked up, his eyes widening slightly, before rolling to the side, narrowly avoiding the crushing blow. The ground where Thanos' fist landed cracked, sending shards of stone flying.

With a flick of his hands, he unleashed a wave of destructive energy, eradicating everything in its vicinity.

"Your power is impressive" Fang Yuan conceded, wiping a smear of blood from his cheek. "But it takes more than brute strength to defeat me." With those words, he lunged forward, his movements a blur, each strike aimed with lethal precision.

Thanos met each attack, blocking and parrying with his own brute force. The sound of their combat was a cacophony of power, each blow resonating through the temple.

Lee, seeing an opening, launched another series of energy slashes, this time aiming low to restrict Fang Yuan's movements. Fang Yuan, caught off guard, grunted as one of the slashes grazed his leg, leaving a bright line of blood.

Thanos seized the moment, swinging a heavy punch towards Fang Yuan's head. 

Fang Yuan, sensing the escalating threat, countered with his demonic qi.

"Ascension!" he roared, his form surrounded by a transparent, whitish aura. "A souvenir from that dragon bastard," he grinned, his fist connecting with Thanos and sending him hurtling toward the end of the temple.

The clash was titanic, the temple resonating with the force of their powers. Thanos, under the strain of the mask's power, felt it leeching his lifespan, aging him as it granted him strength. Undeterred, he unleashed his full arsenal: Overheat, Materialization, – techniques so potent they twisted the very air of the surrounding space. Yet, miraculously, the temple stood unyielding.

Fang Yuan, seizing an opportunity, slashed at Thanos' side. The titan's expression remained motionless as his arm was cut, but with a narrow-eyed glare, he used his powers to close the wound. Fang Yuan's mocking laughter was cut short by a sudden crack and a shout.

"Master! Now!" Lee's voice echoed as he lunged at the huge tooth next to the throne. Thanos, understanding the potential significance of the tooth, moved to engage Fang Yuan, buying time for Lee.

But as Lee's blade struck, it shattered against an unseen protective shield. Fang Yuan's laughter boomed through the temple. "Do you think I wouldn't protect my belongings? You're just delaying the inevitable. Stop running away!" In a blink, he disappeared and reappeared behind Lee.

Thanos, his body taxed from the relentless use of his powers and techniques, coughed up blood but managed to teleport. However, he was too late. Fang Yuan was poised to pierce Lee with his fangs. Lee, too slow to evade, braced for impact.

But then...

*CLANG*

The fangs were deflected by a blade, shattering a nearby pillar. Amidst the stunned silence, a figure descended from the roof, landing in a superhero pose. A purple haired, robed teenager with a maniacal grin surveyed the scene, his eyes alight with excitement.

"You're having quite the fun, mind if I join?!" he exclaimed, his laughter echoing through the chamber.

The voice in Thanos' mind was the only one to articulate its thoughts. "Li Shuang, my boy! " The newcomer's arrival added a wild card to the already frenetic battle, the outcome now more uncertain than ever.