In web novels, monsters usually leveled up according to certain rules and procedures. Some of the common monster leveling systems included: 1. Transformation Stage: Demons gradually improve their strength through cultivation and cultivation, and finally reach the realm of transformation. They can transform into other forms such as human or animal forms. 2. Bottleneck period: Demons will encounter a certain bottleneck in the process of cultivation. They will not be able to further improve their strength and need to break through in other ways. 3. Maturity Stage: The monster gradually increases its strength through continuous battle and cultivation to reach the realm of maturity. [4. Semi-finished product: The monster's strength is relatively weak in the early stages of cultivation, but after a certain amount of cultivation and experience, it can be transformed into a semi-finished product.] 5. Finished product: The monster finally reaches the realm of finished product through extremely high cultivation and cultivation. It has powerful combat strength and special abilities. Different web novels might have different monster leveling systems, but the above systems were more common.