QUOTE(General_Zhaoyun @ Jun 1 2007, 09:59 AM)

I heard Shanghainese were mostly made up by immigrants from the Jiangsu and Zhejiang over the past 200 years when Shanghai was established as a trading port/city.
I'm not too sure about Shanghainese history. can anyone tell me more about it?
Shanghai was located in the area of ancient kingdom of Wu. According to Sima Qian, the rulers of Wu claimed to be descended from Taibo, the elder uncle of King Wen of Zhou. He felt that his younger brother, Jili, was wiser than him and deserved to inherit the throne, so Taibo fled to Wu and settled there. Three generations later, King Wu of Zhou defeated the last Yin emperor and gave kingdom of Wu to the descendents of Taibo. When Taibo arrived in Wu, the historical records claimed he found a group of natives who are half (or more than half) naked and have tattoos decorating their bodies. Those were the original Wu people. By the Spring and Autumn period, Wu was fairly civilized, but it was still considered a half barbaric state. Its capital was Suzhou.
Around the late Spring and Autumn era and early Warring States period, Wu became a fairly powerful state, and it had many conflicts with the kingdom of Yue to its south (Zhejiang area). The Yue people's legend said that they were descendent from Xia (as in the first dynasty of China), but there was no concrete evidence. Eventually, Yue conquered Wu in 473 BC and moved its capital to Suzhou. Later, the state of Chu conquered Yue in 334 BC. Yue people were considered to be separated from the Wu people ethnically before Yue conquered Wu. After Yue conquered Wu, I would think there was some assimilation going on. After the fall of Yue, the ruling family moved to Fujian and set up the Minyue kingdom, which did not fall until ~150 BCE by the Han Dynasty. From this little bit of history, we know why Jiangsu, Zhejiang, and Fujian people are fairly closely related in the ancient time (the mixing of kingdom of Wu, Yue, and Chu).
There was also a reason for Cantonese and Wu people looking alike. My father told me that one of the traditions in the Southeast coastal areas is to adopt other people's sons and send the adopted sons oversea to make money for the family. In these areas, Fujian and Canton, there are not many good farm lands, and it is very hard to survive. The only way to make money was (and is still today) to go overseas or to other provinces. However, the parents did not want to risk their own children, so they bought children and adopt them as their own for this purpose. Children in Zhejiang province, especially in the south, were frequently kidnapped and shipped to Fujian and Canton for this reason. Many Fujianese or Cantonese today might actually had Zhejiang bloodline.
In addition, a lot of Zhejiang people moved to Shanghai or Hong Kong to do business in the last few hundred years. During WWII and after the Chinese civil war, many Shanghainese also moved their business to Hong Kong. I met many Hong Kong Chinese who told me that their family was actually from either Shanghai or Ningbo or other Jiangsu and Zhejiang cities. I also met a lot of Shanghainese who told me their family were originally from Zhejiang province. Many of the famous Hong Kong people were probably from Shanghai or Zhejiang originally. For example, Tung Chee-hwa's father Tung Hao-yun 董浩雲 was from Ningbo originally.