Why is the dialect in Baoshan, Chuxiong different from that in most parts of Yunnan?

The reasons for the differences in dialects are as follows:

1, Baoshan's unique geographical environment has been an impassable place since ancient times, which makes Baoshan dialect have its own characteristics.

2. Historically, the economy in Baoshan area is relatively backward and the traffic is inconvenient, which leads to the disconnection between Baoshan dialect and Central Plains Chinese.

3. During the Ming and Qing Dynasties, a large number of immigrants from Hunan, Hubei and Guangdong settled in Baoshan, which made Baoshan dialect blend southern accent and northern accent.