A prominent feature in the culture of South Vietnam is the inhabited area of many ethnic groups and cultural exchanges between ethnic groups. Volume 3 of the book includes the following contents: Historical characteristics of the land of Binh Duong during the discovery period (17th - 18th centuries); Southern culture under the Nguyen lords (17-18); The policy of the Nguyen dynasty in socio-economic development in the Southern region; Ba Giong land in the war between Lord Nguyen and Tay Son in Gia Dinh (1776 - 1788); Saigon trading port in the social life of the South during the French colonial period; Southern silk; Almsgiving in the South - Human values and concerns; Saigon in the first half of the 19th century through Western records; Saigon before Nguyen Tat Thanh left to find a way to save the country.