She still remembers the content she once came across in Xiao Linshuang's handwritten notes, all that Itchy Grass and croton seeds—those were child's play. If Lao Fan were to take action, he probably wouldn't even need those things; just a pinch of inconspicuous powder could put someone in bed for days, suffering a fate worse than death.
As for Lao Fan's prowess, Xia Zheng had a deep understanding. Was it not only last time that, in order to teach Zhao Hongsheng a lesson, he and Little White Rabbit stealthily took some croton seeds from Lao Fan, resulting in the old man being severely reprimanded by the Emperor? As a consequence, the old fellow vented all his anger on the two of them. Just a word with him, and the next day, both of their faces swelled up like a pig's head.