MTL - Laws of the Other World - Chapter 21 Scabbard

After being set up and killed by her half-sister whom her ex-boyfriend had cheated with, Mu Siyin woke up one day to discover that not only was she alive, but she had traveled back in time to 2 years before her death.

REBORN OF THE LEGENDARY BEAST MASTER

“What? The wild chickens I raised are pure blood phoenixes? ““What? The carp I raised are true dragons?”With a wave of hand, the river was cut off; with a slight stamp of foot, the mountain collapsed.A group of incredibly powerful cultivators knelt in front, worshipping and calling ‘senior’.“What the hell wrong with this world?”Li Fan shouted,” Oh no, that’s impossible!”“How could I possibly be a Supreme Master?!”

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates