At the Beginning, the System Hacked My Newbie Gift Package

One night, Xu San suddenly heard a "ding" sound. "Loading system" "System? My system?" Xu San jumped up excitedly. He has been secretly studying the body, looking for the stimulating conditions of the system. As a time traveler, Goldfinger, how could he not have a system? "The system is loaded, do you want to start it?" A mechanical voice sounded in Xu San's mind. "Start! Of course start!" Xu San replied without hesitation. As the system started, a virtual screen appeared in front of Xu San's eyes, which displayed the six characters "Free Development System". "Uh, free development system! What the hell?" Xu San asked in confusion. "Host, free development system literally means that the system functions need to be researched and developed by the host itself." "Damn it, I have to study the system myself. Others who have traveled through time are invincible at the beginning! It's okay if I don't give Invincible a powerful system," Xu San wailed.