In the Pill House, Pu Yanlan did not rush into alchemy this time. Instead, she transcribed the elixir recipe she had concocted the previous day and took out each of the listed herbs one by one. She chopped them up finely with a small knife and then weighed each with a small scale, noting down the quantities.
Afterward, she placed the Jade Cauldron on top of the Earth Fire Eye and used mana to control the intensity of the flames. For every increase in fire strength, she noted the changes in the Pill Cauldron and thus established ten levels...
What she was doing was quantifying the conditions of alchemy, making it easier for her to control the heat,
"First, finely quantify, and once accustomed, one can add or subtract based on this foundation..."
This required her to be extremely familiar with both the herbs and the control of the flames!
In any case, for beginners, quantification and fine division are very important!