As time passed, Lin Mo's face had grown visibly pale, and he was drenched in cold sweat.
His breathing grew heavy and labored.
The Portal was still steadily expanding.
One point seven meters.
One point eight meters.
Zhao Gang watched from the side, forgetting even to light his cigarette.
He did not understand magic, but he understood people.
Lin Mo's current state was just like those wounded soldiers on the battlefield who kept charging with machine guns, holding on through sheer grit.
"How about taking a break?" Zhao Gang could not help asking tentatively.
Lin Mo did not answer.
It was not that he did not want to, but that he could not.
The moment he spoke, his concentration would scatter, and the Portal would collapse.
Kael answered for him. "Don't disturb him."
Zhao Gang immediately shut his mouth.
He was the teacher. He had the final say.
The Portal's diameter approached two meters.
On Blue Star's side, more and more people were looking through the Portal, all craning their necks to peer inside.
Inside and outside the Portal were two worlds.
Terra's sunlight mingled with the faint glow of Blue Star's World Tree, dreamlike and surreal.
Lin Mo's legs began to weaken.
It was not a problem with his magic power. He still had some left, but his mind was about to give out.
Opening an Interstellar Portal for two hours was equivalent to doing difficult math problems for two straight hours while holding up a hundred-kilogram barbell with both hands.
His mind and body were both at the edge of their limits.
He felt as though his consciousness were a string stretched to its limit, ready to snap loose at any moment.
The edges of the Portal began to tremble slightly.
Kael's expression changed.
He stepped forward and