What you want to ask is the reason why the yuba of Shuinan people in Ji 'an, Jiangxi Province can't be eaten? The reason for this is the following：

1. Dietary taste: The dietary taste in Shuinan area of Ji 'an, Jiangxi Province is inconsistent with the taste and flavor of yuba, which is chewy, difficult to chew and takes a long time to chew. Local residents prefer delicate, soft and chewy food, and feel inconvenient or unaccustomed to eating yuba.

2. Eating habits and cultural background: Eating habits and cultural background vary greatly in different regions. Yuba is not a common food or dish in Shuinan, Ji 'an, Jiangxi, and residents are not familiar with it and don't like it very much. This kind of unfamiliarity and dislike leads to unsmooth eating behavior when eating yuba.