The "Ala" of Shanghainese people was actually imported from Ningbo. The earliest local Shanghainese were farmers in Songjiang area. They still use "伲" to mean "I" and "ER伲" to mean "we".

According to relevant statistics, since Shanghai opened as a port, the total number of Ningbo people in Shanghai is more than that of Ningbo.

Ningbo people mainly do business in Shanghai. They form gangs to do business, and the sound of "Allah" echoes everywhere in the market.

Outsiders, especially northerners, can't tell the difference between southern languages. When they hear "Ala" being used everywhere, they naturally think that "Ala" people are Shanghainese.

In addition, there are nine people who speak "Allah" and one person who speaks "Er". If "Er" has no problem with his brain, he will definitely be assimilated.

Moreover, the descendants of the "Er" people later looked down on the "Er" people, thinking that they were country people, because currently in the rural areas around Shanghai, the use of "Er" is still relatively common.