Sister, I Really Picked You up from the Trash Can

I, Lu Wuwu, am a time traveler who has traveled to a world of high martial arts. This world has secret realms, strange beasts, and a pair of unreliable parents. Because of those unreliable parents, my parents were targeted by their enemies. They applied for protection on their own, but they forgot to pick me up at school when I was 10 years old. On the way home from school, I found that I was being followed. I opened a trash can in a blind spot after a turn, jumped in immediately, and then my jaw hurt. . . . I, Lu Lulu, was an empress in my previous life, and I had just traveled to this world without immortality. What was even worse was that I was a baby thrown in a trash can. Before I could react, the trash can opened, followed by a black shadow pressing down on me. My forehead hurt, and I fainted. . . I have a system. I remember that I was given a time-travel empress from above, but why is my host a boy?