Traveling Through Time to Become a Cat, I Have a System of Evil Cultivation That Kills Living Creatures and Increases Longevity.

Zhang Cheng traveled back in time to a little kitten that was just two weeks old. It was cold, hungry, and dying! But fortunately, Zhang Cheng has an evil system of killing lives and increasing lifespan. He can kill other people's lives and increase his own lifespan. But with the system, who can I, a skinny little cat like me, kill? Does killing mosquitoes count? Calculate, the life span is 1 second. What about killing chickens and cutting fish? Calculate, life expectancy starts in one month. The longer the longevity species, the more lifespan they gain after killing animals. Kill pigs and sheep? Calculate, the number of years of life starts from one year. What about... Bacteria? Get out.... What about cells? ... "I traveled through time to become a cat, I have an evil cultivation system that kills and increases longevity", the counterattack of a cat demon is waiting for you to watch!