If it weren't for that wooden box, Ji Fengli might never have met Yan Yuchen in this life.
If it weren't for that wooden box, perhaps Ji Fengli would never know about his grandfather's love that was not tolerated by the world.
Some things are missed. If you miss them, you won't be able to turn around. It's a lifetime. Ji Yuan missed Shen Nian and was destined to miss her for a lifetime, but he loved Shen Nian for all his life.