C541 Absolute Immortal Sword Evolution

"Heetu, what is the time limit of the current Heetu Luo Shu?" Murong Yu turned and said to the Heetu.

"A trillion times!" However, we need to burn a large amount of Immortal meridians. " Heetu said without thinking.

Murong Yu nodded. Ten thousand years was enough for them to increase their strength.

"In that case, from now on, let's set the time limit to burn the Immortal meridian to one year