I Started Out as the Fiancé of a Big Star

Li Shaojun traveled to a parallel world and thought he was an existence abandoned by God. But he didn't expect that he was the fiancé of a big star. A piano piece unexpectedly became popular all over the country. Director, screenwriter, musician, actor, I'm really not good at it. What? What am I good at, you ask? The doctor said that my stomach is not good and I can only eat soft rice...