Sifeng Dinglu of Chang'an Tianjilu

There are four divisions in Chang'an: Qianwen, Feng Division, Shui Division, and Xiang Division. After Qian Wen Si was exterminated, Feng Si became the sharpest reconnaissance eye in the capital—— It is their job to listen to the wind to identify the road, follow the wind for direction, push the trajectory, and detect crossbow marks. When a murder case occurs that "the wind direction is completely contradictory to the scene", Fengsi female detective Yin Nanzhi was sent to the case. She saw non-existent polylines in the wind path diagram, Find the range that has been artificially changed in the crossbow shadow calculation, In the wind flag track, I read about a certain "wind force that shouldn't be there". The more the case is investigated, the more it seems that someone has deliberately pushed it into a "windless state." The more I investigate, the closer I get to a forbidden road that has been sealed for a long time. The duty of the Wind Division is to set the wind path—— But this time, what she had to face was that someone was changing her ways. If the wind is changed, the road will no longer exist; If the road does not exist, the truth will never reach Chang'an.