When Kai and his disciples reached Huang City, it was already the next morning. His disciples went back to their rooms to consolidate their cultivation while Kai went down to the basement.
He opened up the chest where the ten [Grade-2] beast hearts had been stored and gobbled them all up. When he ate the last one, Kai felt a burning sensation within his heart that quickly spread throughout his entire body. Kai did not fight it and simply observed the process while regulating his breathing.
His muscles would tear themselves apart before quickly healing themselves, then repeating the process again. The pain was excruciating, however, Kai endured it with gritted teeth. After a few hours of this, the process slowed down then suddenly stopped. Kai exhaled a sigh of relief as he opened his eyes to see the results. He flexed his arms, but there was no obvious change.