Quan Ba ​​Heaven Gate or Quan Ba ​​Pass (Cong Troi Quang Ba) are passes on Highway 4C in Quan Ba ​​district, Ha Giang province, Vietnam. This place has an altitude of more than 1500m, is the starting point of another famous place "The Road of Happiness" and is the first gateway leading to the magnificent Dong Van stone plateau .

Ha Giang is a province in the Northeast region of Vietnam. It is located in the far north of the country, and contains Vietnam's northernmost point. It shares a270 km long border with Yunnan province of southern China, and thus is known as Vietnam's final frontier. It covers an area of 7,929.48 km2 (3,061.6 sq mi), comprising 1 city and 10 rural districts, with a population of over 850 thousand people as of 2019.

Thac Tien, also known as Fairy Falls, is a beautiful waterfall located in Xa­n Man district, Ha  Giang province, Vietnam. It is situated near the Dao Gia³ (Windy Pass) area. Thac Tien and Dao Gia³ in Xa­n Man district of Ha  Giang province offer acombination of natural beauty, cultural immersion, and adventurous exploration.