Reading manhua To be immortal for 9000 years old ( Way To Be Immortal ) at manhua website.
Jiu Qiansui, the heir to the grandest sect in the Realm of Eternity, is murdered by his family’s enemy after he was born. Although he is dead, his immortal body stays intact. So Jiu Qiansui goes to hell and is reincarnated as a mortal. But he is doomed to meet a disaster and he won’t live to be 19. When he turns 17, he steps into the Realm of Prisoners in hope of surviving the disaster and becoming an immortal after causing a stir in the four realms.
Changsheng Jiu Qian Sui / Chángshēng Jiǔ Qiān Suì / Chángshēng Jiǔqiān Suì / Way to Be Immortal / 长生九千岁