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Hei Tie's abilities are indeed strong; even Ji Zai is extremely envious of him, for the guy managed to last a full twenty minutes without the slightest intention of throwing in the towel.
"Damn, he's impressive!" Ji Zai praised repeatedly.
"Fuck, I'm going to kill you!" Hei Tie bellowed.
Suddenly, Hei Tie shifted his body and launched into an earth-shattering battle. All kinds of positions like the old man pushing the cart, the ****, the galloping horse... they unlocked every position imaginable. Ji Zai watched, his eyes wide and his mouth agape, think damn, how envious he was. If he had Hei Tie's physique, he probably could have unlocked those positions too.
Ji Zai, this guy who didn't even weigh a hundred jin, could easily be overpowered by any slightly taller girl who might weigh around a hundred jin. Moreover, this guy had the strength of a chicken, unable even to lift a girl, let alone unlock any positions. So, all he could do was look on with envy.