This is a story about waiting, persistence and love.
Su Zheyu fell in love with Xia Yan at first sight.
From the first moment he saw Xia Yan, he wanted to make her smile forever.
Even though he knew he would be frustrated and she would resist, he was still willing to wait until she was willing to give her heart.
So, "Xia Yan, I am willing to wait for you to smile all my life."