Chasing Her for Two Thousand Years

I am Lu Hanni. On my 15th birthday, I was told that I wanted to marry Xie Junkang, who is the same age as me. How could this work? So, I ran away and ran away for two thousand years. I am Xie Junkang. On my 15th birthday, my father used my illness to threaten me to marry Lu Hanni, who is the same age as me. I was worried about my father, so I had to get married first. But I didn't expect that little girl actually escaped to ancient times. I must find her back.