Nan hai guan cha neng li ke wai xun lian =: The boys' book of observation / Nan hai guan cha neng li ke wai xun lian =: The boys' book of observation/ Nan hai guan cha neng li ke wai xun lian/: The boys' book of observation, Nan hai guan cha neng li ke wai xun lian = Nan hai guan cha neng li ke wai xun lian/ Nan hai chuang yi neng li ke wai xun lian =: The boys' book of originality: even more ways to be the best at everything / Nan hai chuang yi neng li ke wai xun lian =: The boys' book of originality: even more ways to be the best at everything/