Ling Yun, the legitimate daughter of the Ling family, the "divine fortune teller" of the Dajing Dynasty. The Ling family has been in charge of the royal arithmetic supervisor for generations, and is proficient in "Linglong Strategy" - a supreme arithmetic scripture that can deduce the weather, food prices, war situations, and people's hearts. Ling Yun is a genius once seen in a century, innocent and kind-hearted, and deeply in love with Shen Tu, who was still a prince at the time.
Ning Wang Shen Tu, the younger brother of the current emperor, has great power in both the government and the public. He looks as gentle as jade, but in reality he is extremely ambitious. In order to seize the "Linglong Strategy", he colluded with his relatives and planned the massacre of the Ling family. He also used the fragments of the "Linglong Strategy" to establish a business network "Tian Xia Tong" that was extremely wealthy and controlled the government.
Su Lin, the hostess of the most mysterious teahouse in Beijing, "Tingyu Pavilion". She has a stunning appearance, a cold temperament, has no plans and is ruthless in her actions. She is a vengeful spirit who has returned from Nirvana.
Su Lin (Ling Yun) used her complete understanding of "Linglong Ce" and her deep understanding of Shen Tu to set up a scheme in secret, using the entire Dajing Dynasty as a chessboard to carry out a precise, fatal, and progressive devastating blow to its business, party members, power, and even its heart.
