She was born into a noble family, and he was also the heir apparent. A piece of paper grants marriage, binding the two people as husband and wife. She happily married into the family, but he always adhered to the obsession he had when he was young, treating her like a guest and treating her like ice.
On the day of reconciliation, he thought he would be relieved, but he was reminded of it day and night in the empty mansion - it turned out that she was the best ink grinder, the wine she warmed was the warmest, and the look in her eyes when she looked at him was so bright.
Things in the world are fickle, and everything changes overnight, and he loses everything. The only question is whether she is still where she was.