STUDYING A　KANJI? I'LL　SHOW YOU　SOMETHING　INTERESTING.

THE TWO KINDS OF KANJI　READINGS ARE ON YOMI AND　KUN YOMI. ALL READINGS　FALL INTO THESE TWO　CATEGORIES. THE MIZU IN 水 ? KUN YOMI. THE SUI? ON YOMI. 食 TABE(RU)? KUN YOMI. SHOKU? ON YOMI.

THE　へい READING OF 塀　IS ALSO　AN ON YOMI, DESPITE THAT　it is　A 国字 So IT DIDN'T COME FROM CHINA. LIKEWISE, きく IS THE ON YOMI OF 菊　EVEN THOUGH IT SOUNDS LIKE A KUN YOMI. IN CONTRAST, SHI IS THE ON YOMI OF 死　UNLESS YOU WRITE 死ぬ, THEN THE U IS A KUN YOMI.