Are there any gifts for the heroine in Quan Xiangyu's Pastor's Tutorial? What exactly is a gift? What does this mean?

A pocket watch necklace was given to the heroine by Quan Xiangyu's father when he entered the seminary, saying that he would put a photo of the person he liked. When the heroine was about to return to America, she opened the pendant at the airport and saw only a mirror with her face printed on it. It turned out that she was his favorite person. Then the hero didn't become a priest, and the heroine didn't go back to America. They are happy together! ~~