Comment by Panik on The Grandmaster of Demonic Cultivation - Chapter 18

Yes he died 13 years ago just keep reading and you'll understand why n how

Yep and it 16 years im pretty sure!

its 13 not 16 it's said in the novel the only one that said it was 16 was the chinese adaptation the live show

He's been dead for 13 but hated by all for around 16

In the live action and the doungha he was dead for 16 but in the novel and (maybe) this he was dead for 13 
He was brought back to life by someone named mo xuanyu 13 years ago before he died people were after him and tried to kill him because he cultivated using evil methods