​1. Geographical Location

Going to the north from Bien Hoa city center, following Bui Huu Nghia Street toward the historic War Zone D about three km is where Tan Hanh ward is located.

Tan Hanh is a suburban ward west of Bien Hoa city, with the following administrative boundaries:

- Its east and northeast border Dong Nai River.

- Its southeast borders Hoa An ward.

- Its west and southwest border Binh Duong province.

The ward has the total natural area of ​​606.08 hectares, accounting for 3.9 percent of the natural area of ​​Bien Hoa city.

In the ward there is Bui Huu Nghia street with a length of about 2.6 km, which is the main route connecting with other communes and wards in Bien Hoa city, and Binh Duong province. This has just been upgraded to good conditions, convenient for outbound transportation.

The ward is adjacent to the Dong Nai River, so it has favorable conditions for developing waterway for goods transport and economic development. In addition they can be combined to create beautiful natural landscapes in urban construction architecture.

2. Wards and Quarters

Tan Hanh ward consists of four hamlets (five regions), including:

+ Hamlet 1A with 10 people groups.

+ Hamlet 1B with 8 people groups.

+ Hamlet 2 with 8 people groups.

+ Hamlet 3 with 9 people groups.

+ Hamlet 4 with 8 people groups.

3. Topography

As an agricultural ward with flat terrain, its altitudes vary between 2 and 3 meters, suitable for production and construction. The terrain tends to lower from the southeast to the northwest and is adjacent to Dong Nai River. There are many canals in the ward so it is very convenient for water drainage in rainy season. Some canals separate its terrain creating certain limitations in infrastructure construction, but for urban construction and development purposes, it results in specific favorable conditions and nice landscapes.

4. Climate and Hydrometeorology

The ward is located in the tropical monsoon subequatorial climate which is characterized by the temperate Southern climate, less affected by natural disasters, and divided into two distinct rainy and sunny seasons.

Rainy season: Rainfall varies according to seasons, at 1,600-1,800 mm on annual average. The rainy season lasts for 6 months, between May and October, with concentrated heavy rain, and the rainfall accounts for 85-90 percent of the annual precipitation. During the season, the amounts of evaporation and air temperatures are lower than those in dry season.

Dry season: it lasts from November to April of next year with little rainfall, accounting for only 10-15 percent of the total annual rainfall while high temperatures and evaporation cause drought in many locations.

Temperatures: The heat background is high all year round, with the annual average of 23-290C.

The Dong Nai River, in the sections bordering the east and northeast boundaries of the ward, is influenced by the semi-diurnal tide of the East Sea, under the regulation of Tri An Lake. In addition, there are quite a number of streams and canals in the ward (including Lai Bong canal, Ong Tiep canal, Soi ditch and Ho Ngua stream), which are responsible for drainage of rainwater and supply of domestic water, and water production within the commune. Also they create conditions for the development of recreational fishing service models and urban architectural landscapes.

5. Brief History

Tan Hanh is located along the bank of the Dong Nai River, which was formed quite early when Vietnamese immigrants opened the land in the late 17th century. By the time of King Minh Mang (1832), Tan Hanh was one of the nine villages under Chanh Chanh My Thuong of Tan Uyen district, Bien Hoa province. Since 1930 Tan Hanh had been a village of Chanh Chanh My Thuong, Chau Thanh district, Bien Hoa province which included five districts, with a population of less than one thousand at that time.

In 1957 Tan Hanh commune was cut into Di An, Bien Hoa province until the South was completely liberated. Since 1976 Tan Hanh has belonged to Bien Hoa city, Dong Nai province.

Tan Hanh people have a long tradition of worshiping their ancestors. The religions are mainly Buddhism, and a few follow Caodaism and Catholic, etc. Currently the ward has Hanh Son Pagoda, Caodai Holy House, Than Tan Hanh Communal House, five family temples, and one martyr monument.

During the two resistance wars against the French and Americans, Tan Hanh was the enemies’ makeshift area but there were always political bases that supported revolutionary cadres and soldiers, which was an area with close relationships to Bien Hoa inner city and surrounding areas.​