When Shen Yihe opened her eyes, she became Chen Huaijin's fifth concubine. She had the lowest status and lived in a side house in the backyard. The youngest son was as thin as a cat. The eldest wife withheld monthly money, the second aunt ordered the maid to throw dirty water, and the fourth aunt was even more ruthless - planting poisonous snakes directly at her door. Her son had a fever and was prevented from seeking medical treatment. She knelt in the rain and scratched her forehead, only to get half a bowl of expired medicine residue. Until she discovered that Chen Mansion had an iron rule: Want to tease someone? A "prima facie evidence" must be left. Shen Yihe smiled. She secretly bribed the laundress, porter, and kitchen boy to weave a network of information about her servants. Did the third aunt plan to blame her for the "theft"? She exchanged the stolen goods in advance and stuffed the third concubine's personal love letter into the eldest wife's dowry. Fourth aunt too much wants to harm her son by "falling into the water"? She made her son pretend to fall into the water, but actually fished out the puppet that the fourth concubine had cursed the main wife with. Every counter-attack has solid evidence, making it difficult for the opponent to even open his mouth to complain. Even better, she discovered that "auspicious purple gas" was coming from the dry well in the backyard - it was actually geothermal steam. She took advantage of the situation and fabricated "Qilin appeared in the world", so that her son was personally designated by Chen Huaijin as "the destiny of prosperous father". From then on, warlords rushed to hold her son, and politicians lined up to send greeting cards. And the people who bullied her back then were kneeling down one by one, begging her to let them go. But she raised her eyes and looked into the study to report: Someone wanted to join forces with the adjutant to kidnap her son to exchange for arms...