Zhang Ailing believes that love comes and goes in just three words, either "I love you" or "I hate you" or "Forget it" or "How are you"? "Sorry".
And Song Si's love comes and goes with only two words, either "Mu Jian" or "I love" and "love you".
Intention: In front of love, there is no distinction between you and me, no distinction between right and wrong, only you and me are the final way back.