Suzhou dialect
After the Taiping Rebellion at the end of the Qing dynasty, in which the Wu-speaking region was devastated by war, Shanghai was inundated with migrants from other parts of the Wu-speaking area. This greatly affected the variety of Shanghai, bringing, for example, influence from the Ningbo dialect to a dialect which, at least within the walled city of Shanghai, was almost identical to the Suzhou dialect. As a result of the population boom, in the first half of the 20th century, Shanghainese became almost a lingua franca within the region, eclipsing the status of the Suzhou variety. However, due to its pastiche of features from different languages, it is rarely used to infer historical information about the Wu group and is less representative of Wu than the Suzhou variety.