In the third year of the Republic of China, the Shen family in Jiangnan. The eldest daughter-in-law, Gu Peiheng, has been in charge of Zhongfu for three years without making any mistakes. It wasn't until the Zhang family in the provincial capital that they were forced to do so by bringing their concubine's daughter Zhang Yunjin into the Shen Mansion to be her "equal wife" - this was an open challenge to her status as the head wife. On the wedding night, Zhang Yunjin asked her personal maid to deliver a message in front of the old lady, saying that Gu Peiheng had defrauded her. Gu Peiheng did not make any fuss, and spread out the account book in front of the whole family early the next morning: "My sister's four-season clothes and gold and silver jewelry are much more than mine. If you think they are not enough, they will be deducted from my monthly account." Using retreat as an opportunity to advance, Zhang Yunjin became known as greedy. But Ping's wife was backed by the guns of the Zhang family's military. Zhang Yunjin wooed the second wife, bought the kitchen, and tampered with Gu Peiheng's son's medicinal diet. The white parrot "Jin Ping" raised by Gu Peiheng seems to only know how to talk, but he can always sift out key information from the whispers of the maid and mother-in-law - who accepted Zhang Yunjin's jade bracelet and who delivered a note to the back corner door in the middle of the night. Killing someone with a borrowed knife does not involve blood. Gu Peiheng used Zhang Yunjin's own hidden stakes to lure the poison back to her roommate; he used Shen Jizong's respect for his legitimate son to force Zhang Yunjin to slap himself in public to admit his mistake. However, the Zhang family would not give up - next time, Zhang Yunjin's brother led troops to block the Shen family's trade route. Gu Peiheng stroked Jinping's feathers and smiled: "It's time for that old fox to have a taste of what it means to fight back with genocide."