(Thanks to "My Chosen of Nurgle Girlfriend Is Actually This Cute" for the tip. Bonus update 2/3.)
"Oh yeah, oh yeah! I won! Grand Inquisitor Ideology beat super-Astartes ideology fair and square!"
After teabagging the Star Chapter Master's face for a while, Li Qinwu turned and walked to the edge of the dueling platform.
He braced his hands on his knees and pointed his backside at the three hundred Astartes below, bobbing up and down as he shuffled sideways and turned a full circle.
"Oh yeah, I won! Grand Inquisitor Ideology is super-Astartes ideology's stern father! Had enough? Had enough?"
Li Qinwu's smug gloating and his utterly obscene squatting instantly enraged the three hundred-odd Astartes below.
They all grabbed their Chainswords and Boltguns, itching to rush up and blow apart that big backside he kept bobbing at them!
One Astartes's Chainsword shook furiously, buzzing as he roared:
"You used psychic power! You cheated!
"If you hadn't launched a sneak attack and fought him head-on, our Chapter Master would've beaten you to your knees!"
Hearing that, Li Qinwu blinked back to the center of the dueling platform, grabbed the Star Chapter Master by the hair, and faced the Astartes who had just spoken. In a mocking singsong voice, he said:
"Whatever. Use any weapon you like. I wouldn't even care if you pulled out a Melta Grenade~~~"
Those were the Star Chapter Master's own words before the fight. Hearing Li Qinwu repeat them in that ridiculous voice left the Astartes burning with even greater shame and fury.
Another Astartes shouted angrily:
"What kind of man uses psychic power in a duel? If you've got the guts, face our Librarian in a fair contest of psychic power!"
The Chapter Librarian's eyes widened as he stared incredulously at the Astartes who had just