Ji yu zhong guo zi ben shi chang de yan jiu. Ji yu wang luo huan jing de yan jiu. Zhong guo zi ben shi chang zhi du bian ge yan jiu = Ji yu wai shang zhi jie tou zi shi jiao de yan jiu. Ji yu meng cun nong ye ji xie hua jin cheng de yan jiu. Ji yu pu tong gao zhong ke cheng wen hua zhuan xing de yan jiu. Ji yu wen hua jing zheng de zhan lüe yan jiu. Dang dai zhong guo si ying qi ye zhu jie ceng yan jiu. Ying guo long duan zi ben de yan jiu/ Mei de liang guo fa lü zhi ye bi jiao yan jiu.