I Have a Two World Lamp

(No system, plot flow, not brainless) Eighteen years after the spiritual energy was revived, Chu Nan arrived! Why does spiritual energy dry up and then revive again? Are the real world and the shadow world in opposition or in symbiosis? Are the transformed evil cultivators, the giant beasts buried deep in the ground, and the inheritance left deep in the shadow world a conspiracy or a blessing? Chu Nan took the lamp of the two realms that came with his soul to identify the truth, travel through the two realms, and reveal one by one...