Why do Shanghainese agree with Zhejiang people?

After the opening of Shanghai, the first immigrants were from Ningbo, Jiaxing, Huzhou and Suzhou. Although Guangdong people came to do business later, they were not as good as Ningbo people. During the war, Su Beiren came, and after the reform, the whole country came. Therefore, the older generation of Shanghainese generally agree that they are from Zhejiang, and the new Shanghainese will know that their hometown is from Zhejiang, and their impression of Zhejiang is only a tourist attraction. That's why there are traffic jams in Hangzhou on weekends, and many roads are Shanghai brands. My hometown Jianglang Mountain is full of Shanghai tourists on weekends. My grandparents' brother settled in Shanghai a long time ago. I used to bring my children back when I could walk smoothly, but now I can't walk and I don't go back to my hometown. So only the older generation agrees with Zhejiang people, and the new Shanghainese are still quite arrogant ~ ~ ~ who despises them.