evidence from Jiangsu and Shandong province evidence from Jiangsu Province evidence from Zhejiang province evidence from Sichuan Province evidence from Jiangxi Province evidence from rural Guangdong China 农民专业合作社内信用合作达成与治理研究:以苏鲁地区为例:evidence from Jiangsu and Shandong province evidence from language policy evidence from colleges in Jiangsu province, China evidence from Yan'an and rural area