I Heard That You Are the System, so What?

[System + anti-system + fantasy + fairy + counterattack + multiple heroines + cool writing + early upgrade + late stage invincibility] In a higher realm, the system master controls the entire world, and all living things in the world are controlled by it. He can elevate one person to the top, or erase anyone at will! Muzi accidentally traveled to this world. What interesting plot will unfold between him, the system and Lu Qingyao?