Let me recommend you two time-travel historical novels. The first book was "Ruffian Servant in the Han and Song Dynasties." The protagonist traveled to the Han and Song Dynasties to become a servant and used his own intelligence to gain the trust of his master. The second book was Eight Hundred Years of the Great Song. The protagonist also transmigrated to become a servant and gradually gained an important position through his own efforts. The main characters of both novels are male! I hope you like this fairy's recommendation. Muah ~😗