Zhong guo lao dong li jiu ye jie gou dong tai tiao zheng yan jiu/ Cheng xiang lao dong li jia wu shi jian pei zhi shi zheng yan jiu/ Zhong guo qi hou wai jiao neng li jian she yan jiu/ Qing xu lao dong de li lun yu shi zheng yan jiu/ Zhong guo qi ye gao ji xiao gong zuo xi tong yan jiu/ Zhong guo fang jia bo dong de shou ru fen pei xiao ying yan jiu/ Zhong guo ya re dai dong bu de ou gong ye kai fa yan jiu/ Zhong guo zhong xiao qi ye chu kou mao yi ji feng xian yan jiu/ Zhong guo lao nian shou ru bao zhang ti xi yan jiu/ Zhong guo xian dai li ci zhong yao zhan yi zhi yan jiu/