Take You to Wander Light Years

Where should the story begin? Is it the era of white clothes and blue skirts 15 years ago, or is it Christmas Eve 10 days ago? Xia He received an invitation to a class reunion but didn't reply for a long time. She didn't know how to face the bright young man who she deeply liked and stayed with her throughout her long youth. Now they have not seen each other for 10 years. When their innocent feelings were deceived and family changes occurred, is the separation of the two the best outcome? In order to find an answer, Xia He traveled far and wide for many years. What will happen when he returns?