Live up to the Beauty of Qingsi

She is the eldest daughter of Duke Su, and he is the neglected fourth prince. A beloved daughter of heaven, a prince who no one cares about. The approach was premeditated, but she didn't expect that it would end up causing her to become ill for a long time. She is his only ray of warm sunshine in the dark sky, and he is her extravagant hope when the lamp is exhausted. They were sweethearts and childhood sweethearts. They thought their marriage would come naturally, but they didn't expect that she had already passed away after returning from the battlefield. All kinds of evidence actually pointed to him who was in a high position? When she was heartbroken, she actually changed her identity and returned to him. After regaining the treasure, he decided not to let go this time.