Linda Chung. According to the relevant public information, "You don't understand my heart" was sung by Linda Chung, which is the song in Linda Chung's first Cantonese album "Dinner for One, Alone". It is the mandarin version of the album "I don't understand you". Lyrics excerpt: You said that you want to fly freely, which is just an excuse, and I will accept it. I once held your hand.