It is a graded reading for children from non-English-speaking countries, which is very suitable for zero-based english introduction. The theme involves natural science, human geography and life stories. Illustrations include hand-drawn cartoons and real photos, and can also be read as popular science books. Hyman is currently divided into three levels, GKG 1G2.
There is no doubt that Hyman can be used as an introductory textbook for zero-based English enlightenment, but Hyman has not been introduced yet, and all we can buy is the motherland version. There are many versions of Motherland Edition, GK has orange box MAX, parent-child time, red box, Amazon edition, G 1 has brown box, blue box, yellow box, G2 is better, only green box.