Why are there no Sichuan dialects in China's seven major dialects?

Because Sichuan dialect belongs to the northern dialect among the seven major dialects.

The seven major dialects are Northern Dialect, Wu Dialect, Gan Dialect, Hunan Dialect, Min Dialect, Cantonese Dialect and Hakka Dialect. But each dialect area is divided into several sub-dialect areas; For example, northern dialects can be divided into northeast sub-dialects, northwest sub-dialects and southwest sub-dialects.

Southwest Asian dialect is popular in Sichuan, Guizhou and Yunnan provinces, most of Hubei, and the northern border areas of Hunan and Guangxi. ?

Extended data:

Characteristics of Sichuan dialect:

1, its entering tone is not only different from other tones in relative pitch, but also develops an entering tight vowel to replace the ending of entering tone.

2. There are 25 initials in Sichuan dialect, including zero initials, but there is no T in Sichuan dialect in most areas. Group initials. There are 42 vowels in all.

Generally speaking, if the tone of the words that make up the overlapping words is rising or falling, then the second word needs to be turned to falling.

References:

Dialect area _ Baidu Encyclopedia