Since 1970, Korean primary and secondary school textbooks in Chinese characters have been canceled, full use of phonography.
年起，韩国小学、中学教科书中的汉字被取消，完全使用表音文字。
2
Since 1970, Korean primary and secondary school textbooks in Chinese characters have been canceled completely the use of phonography .
从1970年起，韩国小学、中学教科书中的汉字被取消，完全使用表音文字。
3
From the morphology of point of view, the ideographic characters and phonography are two completely different writing system, the difference between them is great.