Longevity: Starting by Trading My Lifespan with Supreme Exercise ELV

Reborn as the Crown Prince of Great Desolate Kingdom, Li Changseng was a waste with poor talent in cultivation. As soon as he was crowned a king, his prodigious younger brother rebelled and dethroned him, claiming the supreme seat for himself.
Imprisoned in Eternal Dungeon together with the most notorious villains and unkillable monsters, he suddenly gained infinite lifespan and the ability to transfer his lifespan to other. With these cheats in hand, Li Changseng began his journey of invincibility and a quest of revenge!
Let's watch how Li Changseng subdued the strongest devil and immortal and reign supreme over myriad worlds started with his eternal life!
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This is my first attempt writing a novel with Male Lead, any suggestion, critics, and support is very welcomed. English isn't my first tongue so do expect occasional errors in grammar or stiff dialogues. Hopefully I can improve my writing skill quickly in the future!
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Extra Chapter(s) for PS and PRIV.
500PS = 1 Extra Chapter
1,000PS = 2 Extra Chapters
1,500PS = 3 Extra Chapters
PS Reward effective in Monday in the following week.
2,000 chp = 3 Extra Chapters
5,000 chp = 10 Extra Chapters
10,000 chp = 15 Extra Chapters
Priv Reward effective in the first day of the following month.