How to mark the tones of Chinese Pinyin?

The symbols for marking tones on the pinyin letter I are as follows:

⑤ (one sound), ⑤ (two sounds), ⑤ (three sounds), ⑤ (four sounds)

In four lines and three squares, the Chinese phonetic writing format of I is: a point above I (counted from the top) is placed on the top of the second line, next to the second money; The lower column occupies the middle compartment. This I is written in this way when it appears in the form of a single vowel, and it is also written in this way when it appears in the form of a complex vowel.

Extended data:

Each Chinese character consists of a syllable, which consists of a vowel and an initial. Tones should be marked in the upper part of vowels, which can be omitted for convenience. Tone affects the position of the tongue, not just the vocal cords.

The rules for the location of marked tones in Chinese Pinyin are as follows:

If there are two vowels (vowels), and the first vowel (vowel) is I, U or U, the tone is marked on the second vowel (vowel). In other cases, the tone should be marked above the first vowel (vowel).

Baidu encyclopedia-pinyin tone