I Turn Skills into Broken Ones with a Single Word

A brief description of the manhua I Turn Skills into Broken Ones with a Single Word:
Jiang Yan, wielder of a god-tier modification skill, was exploited until he had nothing left, only to perish during a demonic beast invasion.
Filled with resentment, he is reborn…returning to the time before his Class Awakening!
This time, he will keep a low profile and grow his power in secret.
He won’t just defy his fate; he will save the entire world from the impending Abyssal invasion!