C613 Over the Record One Thousand Kilometers!(2)

Feeling the mounting pressure.

Lei Shan cast a shadowy glance at Su Yu, clenched his teeth, and surged upward with determination.

Yet, the impact at six hundred kilometers was exponentially greater than at five hundred.

Even for someone of his advanced cultivation, the effort was immense.

Gu Ji and Jian Chen, too, were quietly pushing their Great Dao Power to its utmost limits