After Rebirth, He Let the Prince Marry His Concubine, but He Regretted It Again

In the previous life, the prince recognized my concubine as his own Bai Yueguang and insisted on marrying her. I advised him carefully and assessed the situation: "If I marry you now, I'm afraid the Emperor will be suspicious. It won't be too late to marry again when the time is right." Not long after, the emperor ordered someone to kill her secretly. Later, when I helped the prince ascend to the throne, the first thing he did was to convict our whole family of collaborating with the enemy and treason.