Why does Cantonese have nine tones?

Every country has its national anthem in Cantonese homophonic pronunciation: Gege Go Ga Mo Gege Go Ga Give Go Base.

After reading it carefully in Cantonese, others will always give out bursts of laughter mixed with cock crow.

Pronunciation in Cantonese according to the national anthems of various countries sounds very interesting.

In fact, this sentence will not be expressed in Cantonese. The correct expression is: every country has its own national anthem.

Cantonese pronunciation tone:

There are as many as nine tones: yin and yang are divided horizontally, and the yin tone (from the ancient voiced initials) is well matched with the yang tone (from the ancient voiced initials). There are three tones, including yin tone (upper yin tone), middle tone (lower yin tone), yang tone, long vowels with middle tone and short vowels with yin tone, such as "Ba [PAT 3]" and "Bi [P tone T5".

Nine tones and six tones: Yin Ping, Yin Shang, Yin Qu, Yang Ping, Yang Shang, Yang Qu, Yin Entering, Zhong Yin Entering and Yang Entering.

Nine tones and six tones are nine tones and six tones. Simple understanding: First, one tone corresponds to one tone, six tones correspond to six tones, and the other three tones are entering tones.