The North and North Central regions have a humid subtropical climate with 4 seasons: Spring, Summer, Autumn, and Winter. The Central and South Central regions have a tropical monsoon climate, the extreme South Central and Southern regions have tropical savanna characteristics. At the same time, it is directly influenced by the trade monsoon climate, which often blows in low latitudes. The South often has a tropical savanna climate, hot and humid with two seasons: dry season and rainy season (from April-May to October-November). Every year, the cold and humid winter typical of the North contrasts with the warm atmosphere of Tet and spring in the South.
The Vietnam National Gene Bank preserves 12,300 varieties of 115 species. The Vietnamese government spent US$497 million to maintain biodiversity in 2004 and has established 126 protected areas including 28 national parks. Vietnam has 2 world natural heritage sites: Ha Long Bay and Phong Nha - Ke Bang National Park and 6 biosphere reserves including Can Gio, Cat Tien, Cat Ba, Kien Giang, and River Delta mangrove forests. Hong and Tay Nghe An.
Costume is one of the important factors that differentiate Vietnamese culture from other countries in the world. The costumes not only mark the cultural traditions and customs of the Vietnamese people, but they are also the breath and soul of a nation.
Vietnam's costumes are very diverse and rich, but the ones that impress people the most are the ao dai and the four-piece dress. The outfit carries the look and soul of Vietnam and when it comes to it, people will immediately think of Vietnam and that is the traditional ao dai. Traditional ao dai consists of a long shirt split into two front and back flaps, floor-length pants, material is silk or plain fabric, diverse colors and patterns.