Xiao is a very popular singer. He mostly sings love songs..however, one day, in his interview he said "I don't have anyone.. I'm actually pretty lonely..". It was kinda unbelievable for you at first, and it was kinda sad. His love songs were sang all across the world..but he was lonely. One day, you met him in the streets. He looked kinda sad. He was humming to a sad melody.