The Most Powerful Prince in the Empire

He traveled through time and became a useless imperial consort. The princess is looked down upon in every possible way, the mother-in-law and the queen are being tormented in various ways, there are many factions in the court, there are treacherous ministers inside, and there are powerful enemies outside. Let's see how the useless prince-in-law uses modern knowledge to crush this era and rise to be the strongest prince-in-law... "Lord Consort, how about you come and sit on this throne?" "No, no, princess, if you sit down, doesn't that mean you are sitting down for your husband?" "Husband, why don't you take the Western Wei Dynasty as well. I feel uneasy as a concubine." "No, unification of the world is too troublesome. What I want to do most is to be a salted fish..." …