Ben shu xiang xi yan jiu le xi bu nong cun de yi liao bao zhang, Yang lao bao zhang, Zhu fang bao zhang deng ji ben she hui shi ye fa zhan wen ti, Bing ti chu le xiang ying de jian yi he zheng ce zhu zhang, Qi zhong she ji de nong cun zhu fang bao zhang deng wen ti tian bu le xue shu jie yan jiu de yi ge kong bai.