1 Our teaching emphasizes that the teaching of sound and tone accounts for more than half of the time, and the tone is placed in an inconspicuous position, sometimes it is just a formality.

English: Because English writing is similar to Pinyin, but it can't be marked with tones.

Students don't have a good habit of writing tones or don't know how to rewrite them.

Some pinyin copybooks bought by our parents are not marked with tones, such as Yu and then draw a fish.