Diao cha ju yan jiu/ Jiao yu xue yan jiu/ Niao lei zhi yan jiu/ Xue xiao zhi du yan jiu/ Diao cha yan jiu zhi yan jiu/ Shi ci qu yan jiu/ Bi jiao ti yu yan jiu/ Shi fan jiao yu yan jiu/ Zhi ye jiao yu yan jiu/ Zi xun jiao yu yan jiu/