Wushisan was a powerful drug. Although its short-term use would refresh the mind and enhance physical strength, but its long-term use would cause addiction, and over time would make people insane, and also cause dementia.
It was common practice for the nobles and officials of the previous dynasty to consume five-stone powder of Wushisan, which also aggravated the demise of the previous dynasty to a certain extent.
It was precisely because of the lessons learned from the past that in the Dasheng Dynasty, Wushisan was a drug that was banned from circulation.
But now that banned drugs have been found in the inner courtyard of the deep palace. How could Emperor Ming not lose face?