Zhao Cheng'an ate all eight plates of potato dumplings through tears—not because every plate exceeded his stomach's capacity, but because it reached his taste limit.
Qin Huai asked him if there was room for improvement in the recipe, to which Zhao Cheng'an replied that the recipe was a good one, and indeed there was room for improvement. However, one shouldn't be constrained by the recipe; why must we modify according to this recipe? Can't we just improvise and... be creative? He believed in Qin Huai's ability; Qin Huai could do it.
A stubborn mouth, but not overly so.
As for what cured Zhao Cheng'an's stubbornness...
If he insisted stubbornly that his recipe had no issues, then he should modify and extend on the basis of the original recipe, and all subsequent potato dumpling tasting would be done by himself.
Zhao Cheng'an believed Qin Huai would definitely do this, because he realized that Qin Huai didn't really like eating these potato dumplings.
