He traveled through time and space just to protect his lover, but he couldn't fall in love with her when he met her. He personally helped his lover find her other half.
Zhang Jingyan: No more goodbye, no more love, I am willing to change your happiness.
Lin Kai: Zhang Jingyan loves Si Xia so much and is my number one love rival, but it makes people feel sad.
Maybe there is an invisible Zhang Jingyan around us, who is silently guarding you, sad for your sadness, and happy for your joy. You won't leave until you are happy.