Yin An, a modern social beast, accidentally crossed into the ancient Hou Mansion and became a marginalized child who was neither loved by his father nor loved by his mother, and was despised by the whole government. However, he was also bound to a "demon system", and his character was directly welded to death - he was vicious and vicious, and he must retaliate with anger. The main theme is "I will trick anyone who messes with me." As a time traveler with modern knowledge, Yin An didn't pay attention to ancient house fighting at all. After all, after years of struggling in the modern era of information explosion, this house fighting trick is just childish. The fight between concubines and concubines in the mansion intensified. The insidious and cunning concubine made stumbling blocks at every turn, defrauding the family members, framing them, and sowing dissension. Yin An sneered, and easily solved the problem with modern common sense: using chemical knowledge to expose perjury, logical thinking to see through tricks, using business ideas to make a lot of money, and even using modern social skills to win people's hearts. While pretending to be crazy and pretending to be a devil, he used modern knowledge to reduce dimensionality and attack, which made the Hou Mansion restless. However, he also unknowingly counterattacked from a marginalized child to a presence that cannot be ignored in the Mansion. He also dealt with the sinister concubine and lived out the arrogant house fighting life of a devil. The whole process was humorous and enjoyable.