Liam could go two ways about his rule. Since only he could dictate one, it could steer the entire fight towards him.
First, he could center it around incapacitation.
'If I don't defeat you in 20 attacks, you win.'
This was the safer option, and the surefire way of assuring himself a win.
The Unmoving Mountain Sect had incredible defense. Usan had told Liam about it. Their names weren't boastful.
Like mountains, they were firmed to the ground and immune to knockback.
But Liam wanted to make this a death battle. And when lives were put on the line, both parties would have to attack and defend.
Thus…
"A battle of endurance," Liam said to the man.
"We can exchange one attack – any except mental – in turns. If you incapacitate me, you win. If I cripple you, I win."
"The attacks will be direct, and you cannot use external defenses to block them."