Traveling Through a World and Changing a System

[Travel] + [System] + [Aura Recovery] + [Reward] Qin Yu was born in a peaceful era, and he was still a rich second generation. He thought he would spend his life in peace and enjoyment, but he suddenly awakened to a system called Wanqian System, which meant that he could have countless systems, but they were random, and he could choose to retain one function every time he changed the system. The first system was the time-travel system, which allowed him to travel to Wuhun Continent. He changed the system directly and retained the time-travel function. When he returned from Wuhun Continent, Qin Yu unexpectedly learned that he was not the biological son of this rich man. They had received their biological daughter... How about that? It didn't affect him, because his parents had doted on him since he was a child because he had excellent grades. Instead, they beat and scolded their biological daughter. But I always feel like something is wrong...