Under the old locust tree outside Zhuque Gate in Bianjing City, on the street corner where the fragrance of locust flowers always floats, there is a young fortune teller named Su Yu. He guarded the cloth banner of "Su Ji Numerology" and relied on the horoscope calculation skills he learned from his master to predict marriage and safety for the neighbors. He just wanted to make some money to live a peaceful and stable life.
Until one day, a plainly dressed Qingbu guest came to ask for divination. Su Yu took the birth date written by the other party, and when he counted it with his fingertips, he realized that his destiny was extraordinary, but he only advised him to "hide his head to avoid disaster" without saying anything more. Unexpectedly, this time of ordinary fortune-telling, he was unexpectedly involved in a public case in a salt farm on the outskirts of Beijing - an innocent porter was wronged, the trace of illicit salt was hard to find, and there was a series of right and wrong that needed to be clarified behind it.
From then on, street gossip stalls were no longer just a place to settle the trivial matters of the market. With an unexpected token, Su Yu went from ruining temples to investigate traces of illegal salt, to tracking down suspicious ships at the dock, and then helping the government sort out clues in the case. He used the wisdom in the hexagrams to identify the direction, and used the transparency of the market to gain insight into people's hearts. He didn't want to cling to the powerful, but only wanted to stick to his master's teachings of "distinguish right from wrong before fortune-telling", protect the stability of ordinary people in the storm, and walk out of his own "destiny path" through making choices again and again.
