So, theoretically, this energy storage is like a treasury!
Su Yu placed his energy storage at the end, which is regarded as a finale, estimating there must be good things inside.
"I wonder how many energy coins are in there?"
Su Yu approached the door, feeling slightly excited, and then launched an extreme force punch again.
Bam!
An extreme force punch hit the door of the energy storage, producing a muffled sound.
The door didn't even budge!
"So sturdy?"
"Something's not right! There's energy flowing in the door!"
Su Yu quickly noticed something amiss.
The doors of the previous two warehouses, although made of a sturdy material, did not have energy support, so Su Yu could easily smash them.
But now, this energy storage door still retains strong energy.
With the material of this door and the infusion of energy, it can withstand attacks of the fourth rank level.