Refining

Lu Zhen looked at the herbs and carefully selected the ones that needed to be used for the paste, following the instructions from the book.

Actually, the herbs used for most of the paste were very common herbs that could be found everywhere. However, the most tedious thing was the extraction process, as any mistake in it could lead to the failure of the fusion of these herbs. It required extensive research and care, as any mistake in the process would result in a complete failure of the fusion process of the paste. And the same applied to pills, but the consequences were even harsher since there was a chance of them exploding.

"Hmm…" Lu Zhen took one last look at the book to check if it was in line with his ingredients, confirming that it was.

Lu Zhen placed the book on the table and exited the room. As he stepped outside, he encountered Lily walking towards him.

"Lily, do not allow anyone to enter this room for now," Lu Zhen instructed with a firm tone.