At the edge of the desert, Zhang Fei and Banner once again approached a cave.
"If there's nothing here either, none of those records are worth anything."
Banner had stuck to his policy of investigating first and acting later.
He had researched the astonishingly sparse records about this place.
Using the locations mentioned in those records, he had compiled a list of possible sites.
Unfortunately, after a series of searches, this cave was the only place they had yet to investigate.
Every other site had been a dud!
"This is our last chance. If there's nothing here this time, there's nothing else we can do. We'll have to give up."
Banner was feeling a little nervous too. He made his final preparations and took a deep breath.
He kept enough anger simmering inside him to draw on at any moment. His heart had taken on a faint green tint, ready to activate the Hulk's power within his body at any time.
Banner had now developed a new way of using that energy: transforming only his heart.
This strengthened his heart's ability to pump blood, sending it coursing through his blood vessels to every part of his body with greater force.
Of course, Banner wasn't going to suddenly explode and die just because his heart had grown larger.
As his blood circulated rapidly, Banner could clearly feel it surging through his body.
In this state, Banner could flood his body with power at any moment.
And transform into the Hulk.
The two began making their way cautiously into the cave.
Caution was the most basic requirement when facing dangers that could appear at any moment.
Even though both Banner and Zhang Fei were extremely powerful fighters.
Banner himself was also a highly accomplished researcher.
Through his research, he had invented a