After Five Thousand Years of Training, Come Back and Work as a Bodyguard for the School Beauty?

"Invincible Literature + Not Taking the initiative to show off + Urban Cultivation + Famous Scenes from Movies/TV Series" The protagonist Su Yi was originally the only son of a poor family. His father passed away when he was young, and he was raised by his mother alone. After the college entrance examination, Su Yi went out to work alone during the summer in order to reduce the burden on his family when he went to college. Unexpectedly, something happened at home, and her mother fell ill... Su Yi took the bus home overnight, but had an accident on the way, and accidentally traveled to another world. After nearly five thousand years of struggle in the other world, Su Yi became the strongest person in the other world, and finally had the ability to return to Earth. Su Yi had just returned to Earth, but accidentally saved the daughter of the Liu family in Yangcheng. After nearly five thousand years of living in another world, Su Yi had long forgotten what life on Earth was like. With the help of the wealthy daughter, Su Yi reintegrated into society, and Su Yi became the personal bodyguard of the wealthy daughter who was in college, and started a colorful urban life...