Ri ben xun huan jing ji yan jiu/ Ri ben xun huan jing ji yan jiu / Ri ben di si ji yan jiu/ Bing tuan jing shen yan jiu/ Ri ben wen hua tan jiu/ ri ben dian ying ju ben xuan Ying guo long duan zi ben de yan jiu/ Ri ben qi ye jing zheng li ge an yan jiu/ Zhan hou ri ben de han zi zheng ce yan jiu/ ri ben guan li de wei ji