Reviving Spiritual Energy, I Can Upgrade Resources Infinitely

Gu Chen came to the world of spiritual energy recovery. Here, strange beasts filled the sky, and there were unknown and powerful enemies in the caves. Facing his grandfather's death in battle, his mother's life or death was uncertain on the battlefield, but her own meridians were weak and she couldn't even practice. Gu Chen, who was completely dejected, now awakened to the upgrade system of all things! Ordinary marrow cleansing solution? Jump three levels in a row and become a popular liquid solid! Ordinary steel knife? Jump up to five levels and become an alloy knife that can cut through iron like mud! What, the ordinary first-level skill to open the monument is too **? Don't panic, just upgrade to the seventh-level skill, Heaven-shaking Seal! If that's not enough, how about using holy martial arts to tear apart the hands of gods? Anything in Gu Chen's hands becomes a divine weapon! When strong men from other countries were still struggling to find resources in the caves, they suddenly discovered it. How come everyone in China is a ninth-level powerhouse? What? Has China leveled the cave? Gu Chen's strength has surpassed that of Martial Saint? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.