"There's not much to say, my ancestor was blessed with exceptional medical talent. After years of practice, he cured many people and became quite famous in the south. The Court once wanted him to enter the Palace to treat the Royal Family exclusively, but he declined and offended them."
"However, my ancestor was a divine doctor, highly skilled in his craft. Although the Emperor was displeased, he did not do anything to my ancestor. But then, my ancestor developed the 'brain-rotting pill'."
"As the name suggests, the 'brain-rotting pill' corrodes the brain. There's an antidote and also a mitigating drug. The antidote can damage the brain, while the mitigating drug can control a person. Taking either one is insidious, so my ancestor destroyed them shortly after their creation."
"Somehow the information leaked out and reached the ears of the Emperor, who then insisted that my ancestor hand over the formula."