English: According to the section about distinguishing similar characters in the Kangxi Dictionary, the lower part of the character 青 is actually a variant of the character 丹, not the character 月, though this part looks the same as 月 in handwriting. Comparing the original forms in the seal script of the characters 青 and 丹 with 月 and 閒, a character which has 月 as its lower part, the difference between them is obvious.