As the world's top alchemist, what he anticipated most was not sufficient medicinal materials, high-tier cauldrons, or complex alchemy techniques… but an excellent Drug Tester!
No matter how well-designed and exquisitely prepared the medicinal materials are, once the product is finished and wants to be distributed, it must first be tested by someone, identifying its strengths and flaws before it can be released.
Over the years, to conduct these tests, Bian Zhongwen had found countless people. As a result, after taking the medicines, some died and some were injured, hardly obtaining any useful feedback.
Especially for high-level medicines, even if they are highly beneficial, they are not something that low-strength cultivators can withstand.
As for those with high cultivation, possessing bodies worth thousands in gold, who would risk their lives for experiments?
Without testers, the quality of the medicines couldn't be verified, leaving no choice but to shelve them.