The North Bund is located in the southern riverside of Hongkou District, Shanghai, characterized by rich historical architecture. The yellows make up a large proportion, followed by the reds and neutrals. The auxiliary and interspersed colors center round the reds, neutrals, followed by the yellows. Dominant and auxiliary colors fall into the category of high and mid-high brightness and the interspersed colors of low and mid-low brightness. The color development of the historical buildings on the North Bund can be divided into five periods. Before 1843, the residential buildings centered round light colors like light-gray and white; the palace and temple architecture were ablaze with red, yellow, green and black. From 1843 to 1985, the Colonial Veranda-style and classic buildings began to emerge. The dominant and auxiliary colors center round light-yellow and tangerine with high and mid-high brightness; and the neutrals make up a large proportion. From 1986 to 1919, Colonial Veranda-style buildings on the North Bund achieved a dominant position, the dominant colors were light-yellow, dark-red and gray blue analogous to the neutrals. The color structure was rather unstable. From 1920 to 1937, decorative and modernist buildings gained in popularity. Red made up a large proportion of the dominant, auxiliary colors and interspersed colors, but the interspersed colors were darker, such as pink and fuchsia. The relatively stable structure has the largest number. From 1938 to 1949, the construction industry proved to be stagnant, and preference was normally given to more neutral colors, having no particular distinguishing features