At the Beginning of the Fight Against the Push of Grace, I Became the Royal Husband.

Shen Yi'an traveled through time and became the concubine of King Qing, the most powerful vassal of the Great Jing Dynasty. It happened that the imperial court promulgated a rough version of the "Tweening En Order" - the "Edict of Imperial Enfeoffment". The concubine could inherit the vassal prince's fiefdom just like the eldest son. In order to maintain the integrity of their fiefdom, the vassal king and his eldest son resisted the grace order and killed their sons to resist. Shen Yi'an began to save himself.