Empress, If You Force Me to Become the Royal Husband, I Will Never Obey.

When modern people wake up, they travel through time and become the dandy son of the Minister of War of the Zhou Dynasty, Xiaren. He wanted to just eat and wait for death, but he had a grumpy father, a shrewd old woman, and an empress who looked lazy but was actually iron-handed and watched him every day. He tricked him into forming a "Shadow Guard", responsible for monitoring the entire city and purging the court for the empress.