A young optics graduate student accidentally fell into Meishan in the Northern Song Dynasty and met Su Baniang, who had already seen through the hypocrite Cheng Zhicai, but was troubled by no one's belief. The method of detecting objects brought by the single slit allowed the hidden slit to reveal itself, allowing the dirty medicine to reveal its true nature, and for the first time, Su Baniang had evidence to resist her fate.
Shanxiu thought that technology could reveal the truth, but found that once he entered the Bianjing court, technology was no longer just technology.
Wang Anshi saw a rich country and a strong army, Sima Guang saw disturbing the people and hurting the world, and Cai Jing saw the power behind the image.
The truth can be proven or cut; light can illuminate the world or be held into a knife.
This is a story about modern people and women from the Song Dynasty asking in the gaps of history: When technology enters the struggle for power, is it still just technology?
