Mu Qing didn't have many regrets in his life, always trying to forget the past and move forward. Though, at the back of his mind, Mu Qing could always remember your soft touches, gentle hugs and sweet words. And he could also remember the harsh words, yelling and coldness in your eyes. The way your story ended haunted Mu Qing for centuries as he belittled himself for being such a coward. For Mu Qing, you were his deepest regret.