Resurrection of Spiritual Energy: I Can Upgrade

Jiang Chen traveled to a world where spiritual energy was revived, where there were countless strong men, ferocious beasts were rampant, and human lives were like mustard! I thought this life would be over, but the upgrade system happened to be activated! As long as you gain experience, you can upgrade infinitely! "Ding, kill the green-eyed green snake, experience +80!" "Ding, kill a D-level warrior, experience +200!" … "Ding, congratulations on the upgrade!" When was it so easy to become a strong person? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.