Cao Mao had initially had a few reservations about this man.
Pei Xiu had said he bought powder from him, so the Cao Xi in Cao Mao's imagination had resembled a Death-Defying Powder Master, grabbing Pei Xiu by the neck and making him say his name.
But after meeting him, Cao Mao discovered that he was no Death-Defying Powder Master. This was a goddamn medical expert!
Cao Xi was highly accomplished in medical theory. He was proficient in numerous treatments and even took Cao Mao's pulse himself.
When the subject of medicinal powders came up, Cao Xi spoke of several of his achievements.
He had successfully treated patients with powders.
Hearing this, Cao Mao understood. The problem was not Five-Stone Powder itself, but how it was used.
This stuff could harm people, but it could also save them. When these medical experts first made it, their original intention had been to save lives.
It was only after falling into the hands of bastards like Pei Xiu that it had become something else.
Cao Mao put away his false smile and disdain, gaining some genuine respect for Cao Xi.
When Cao Mao brought up fertilizer, Cao Xi seemed very surprised and repeatedly asked where the ancient formula had come from.
Cao Xi was extremely curious about Cao Mao's formula.
"Your Majesty, nothing has interested me more throughout my life than medicinal formulas. Although this formula is not for medical use, it might contain something Your Majesty has overlooked. Might I borrow it for a look?"
Cao Xi's eyes gleamed. These medical types all had a compulsion to collect things.
Or rather, all the famous scholars of the day had a compulsion to collect things.
They simply liked collecting different things.
When Cao Mao mentioned an ancient formula, Cao Xi's first thought