Feast's devouring and evolution were different. The former was a killing skill. As long as there was no living thing in the stomach, it could be activated. Even if there was a living thing that felt that it could be suppressed, it could also be activated.
At the end of the devour evolution, Lu Chen could even copy the Mahamayuri and devour the evil deeds of an entire town.
However, the evolution provided by the feast was different. This was because evolution required the true soul of another person to complete the body. This required the body to be reconstructed from the root. In order to prevent the body from collapsing due to the continuous evolution, there was a cooldown time limit.
As the Harpy was an elite creature, devouring her wouldn't help Lu Chen evolve. Therefore, Lu Chen could now devour the divine sons to evolve himself.
