He will always be young.

When Wen Lang's mother passed away and her father remarried, at the most painful age of eighteen, she stood on a rooftop, teetering on the brink of collapse, when time traveler Li Guang appeared out of nowhere and pulled her back to Earth. Li Guang accompanied Wen Lang through her darkest years, and then disappeared again. Wen Lang searched for him for many years until she became a popular actress, and finally reunited with him.