Fan cheng da yan jiu/ Xing fa yan jiu/ 「 wei cheng」 yan jiu/ Tang shi xing cheng de yan jiu/ Cheng dou cheng shi yan jiu/ Zhong qing cheng shi yan jiu/ Gong cheng di zhi li xue yan jiu/ Qian zai ke cheng yan jiu/ Liao cheng yun he wen hua yan jiu/ Mi zong da cheng jiu/