C625 The Preparation to Advance

Zhang Nan nodded and stopped cultivating.

Soon, Zhang Nan finished preparing the wooden barrel and took out the Demon Blood from the Cerulean Spear. He then poured the Demon Blood into the wooden barrel.

Zhang Nan entered the wooden barrel.

As soon as he entered the wooden barrel, Zhang Nan could not help but take a deep breath.

A wave of coldness entered Zhang Nan's body. Soon