Postal code (Zipcode) of Xã Thanh Hải is: 18413

Thanh Hai Wards, Thanh Liem District, Ha Nam province, Viet Nam

Vietnam is a country on an S-shaped strip of land, located in the center of Southeast Asia, in the east of the Indochina peninsula, to the north by China, to the west by Laos and Cambodia, and to the southeast overlooking the sea. East and Pacific. Vietnam's coastline is 3,260 km long, and its land border is 4,510 km long. On land, from the northernmost point to the southernmost point (as the crow flies) is 1,650km long, from the easternmost point to the westernmost point the widest place is 600km (Northern region), 400km (Southern region), the narrowest place is 50km (Quang Binh).

Vietnam is an exciting country for tourism and investment. Bustling street life, delicious cuisine and majestic scenery all await you. A country constantly in motion, Vietnam always balances young urban culture with traditional values. In the city, ancient temples are just a turn away from modern shops. In the countryside, life still flows along the rivers and harvests. This contrast between old and new makes up a large part of Vietnam's appeal. Another reason to visit Vietnam is its natural beauty. The North has majestic mountains and beautiful limestone bays. The Central Coast Road leads to historical relics and romantic beaches. And in the South, the sleepless life of Ho Chi Minh City and the riverside villages in the Mekong Delta will make you want to linger forever.

Vietnam's terrain has about 40% mountains and forests, 40% hills and coverage of about 75% of the country's area. There are mountain ranges and plateaus such as Hoang Lien Son range, Son La plateau in the north, Bach Ma range and plateaus following the Truong Son range in the south. Network of rivers and lakes in the delta or mountainous areas of the North and Central Highlands. The delta accounts for about 1/4 of the area, including deltas such as the Red River Delta, Mekong River Delta and the Central Coastal Plains, which are densely populated areas. Cultivated land accounts for 17% of Vietnam's total land area.

According to the ups and downs of the nation's history, Vietnamese customs and practices are constantly being innovated according to social trends. One of the oldest and most influential customs in history is the custom of chewing betel. This is a custom that dates back to the Hung King period and originates from the legend of Trau Areca and this custom has become a typical image of the brotherhood and love between husband and wife of Vietnamese people. Not only the custom of chewing betel, Vietnam also has another custom that was born in ancient times, which is the custom of welcoming the new year, also known as Tet - traditional Tet.