I Open a Slime Ranch in the Apocalypse

Feng Chen woke up early in the morning and found that the city was in chaos. The streets were full of zombies and people being chased by zombies. Feng Chen couldn't help but feel desperate. How could he, a high school student, survive in this apocalyptic world? "Baga, the Slime Ranch system is being activated..." Feng Chen: "??? Why does your system have a different accent?" But now is not the time for him to worry, he actually got the legendary system! "System, what functions do you have?" Feng Chen asked enthusiastically. "Baga, this system will give the host a slime ranch. The ranch is equipped with a strong security system. The host will be able to complete the task of capturing slimes with peace of mind. There are many types of slimes, and the host's task is to collect each type." … After Feng Chen captured the first slime, he finally understood the power of the system, that is, each type of slime will produce different crystals. For example, the crystals of water drop slimes are rich in pure water, and the crystals of firefly slimes have lighting functions. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.