I Am the King of Scrolls in the Three Realms

The protagonist is the ace of a killer organization. Today is the last day of her retirement, but the leader wants me to keep the secret forever without paying my high pension. He designed to poison me, but I secretly hid a grenade and detonated it before I died! ! All must die! With a pop, they died together... I never expected that a jade plaque on my body would emit a dazzling light. . . .