"Er bai zhao ping min da wen ti zui qing bian di jie jue fa" . . . . . . . "二百兆平民大问题最轻便的解决法" . . . . . . . "二百兆平民大问题" . . "Er bai zhao ping min da wen ti" . . . . . . . . . . . "二百兆平民大問題最輕便的解决法" . . "Greatest problem of China's two hundre million people" . "Er bai zhao ping min da wen ti zui qing bian de jie jue fa" . "二百兆平民大問題" . . . "Chinese language Pronunciation Study and teaching." . .