Cold air rose in wisps from Su Xiao's fingertips. In his hand was a test tube covered in frost marks—a failed batch of Radiance Potion.
The manufacturing process for the Radiance Potion was somewhat unusual. Material processing, property harmonization, and the other steps were not difficult. The only challenge was cooling.
The Radiance Potion had to be cooled within 1.2 seconds, but if the temperature was too low, it would destroy the components within the potion.
It was a vicious cycle. If the temperature was not low enough, the potion could not be completely cooled within 1.2 seconds. If the temperature was too low, it would destroy the potion's components.
To fully formulate it, Su Xiao had to make multiple attempts. However, the Radiance Potion was expensive, with each bottle costing 250,000 Paradise Coins.
Su Xiao had already failed three times in a row. The 750,000 Paradise Coins had gone down the drain just like that. Compared with the Paradise Coins consumed, the material exchange limit was the real problem.
Because the Radiance Potion's materials were relatively rare, Su Xiao could only exchange for 20 portions each time he returned to Reincarnation Paradise. If his authority level were not so high, he could exchange for at most seven portions.
Clearly, after reaching a high level in the Plant Harmonization chapter, the main problem was the source of materials. Simply exchanging Paradise Coins for them was obviously not viable. As for purchasing them from the Trading Market, that was even less possible. The efficiency was too low; it might take several world progressions to obtain a single portion. Moreover, for materials that could be used to formulate potions, contractors would demand exorbitant prices.
The Worker merchant route was impossible as well. If Su Xiao bought from those people, even if he