Get the System from the Underworld at the Beginning

Tianzong, a young man who calls himself a brother to the King of Hell, accidentally travels to an oriental fantasy world where strength is supreme and the jungle is strong. The pure and elegant senior sister, the unruly and willful princess. The powerful and mysterious underworld system, the arrogant protagonist who will offend others if they offend me. The knife is not sharp and the horse is too thin. You are not worthy to fight with me. My name is Ning Yang, Zhang Yang! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.