I Helped the Hostage Prince Become Emperor

Li Zhiyuan transmigrates into the body of a Great Zhou princess and, after a playful trick, saves Fu Jinglan. She then begins teaching him. With Li Zhiyuan's care and guidance, Fu Jinglan masters every skill and secretly falls in love with her. His days as a hostage are coming to an end when a palace coup erupts in Great Zhou. All he hears is that Li Zhiyuan died in the upheaval. He boards a ship home alone, only to be plotted against by his own brother... Just then, someone steps forward and saves him from danger... The more he looks at this person, the more they remind him of Li Zhiyuan...

Bet you didn't expect this, Fu Jinglan: it was me all along...