Dragon Ball God Mu - Chapter 20

Lingyun, a fierce and savage cultivation genius takes over a dead teenager’s body. Coincidentally, they are both named Lingyun. Set in a alternate version of the 21st century, teenager Lingyun has been killed by someone with a grudge.

- Description from Novelupdates

The person that Pei Zhen hates most in his life is the perfect Fu Sichen. Alas, life is full of surprises and unpredictability. One fine day, an accident turns Pei Zhen into Fu Sichen’s pet cat! As Fu Sichen’s pet cat, he makes a shocking discovery about his sworn enemy – a deep dark secret that the perfect Fu Sichen has kept hidden for years. Trapped in his cat body, Pei Zhen moves from one adventure into another while trying hard to find a way of turning back into his human self. When he finally does, the world as he once knew, has become a completely different place!

After 50 years of being in the position of Hwacheon Clan Leader, Kang-hyuk, widely renowned as 'The Dragon' retires.

Traveling through a parallel world, Ye Cheng planned to be a copywriter and copy tomb robbing novels, but he became a gold medal writer in one fell swoop.

But who would have imagined that, with the unearthed ancient tombs, Ye Cheng’s novels have become reality.

Numerous archaeological teams rushed to ask for advice.

As a result, as Ye Cheng solved more and more ancient tombs, he couldn’t explain it more and more!

…

- Description from novelbuddy