Day 1: Dong Van - H'mong King Palace (around 30km) Morning! The guide will introduce the itinerary, the biking trip will Sing lung school. We will meet schoolchildren and you can play games, teach English to the kids. Lunch there. Continuing, you will bike then cross a landscape of pine forests and find yourself at the King of the Hmong’s Palace, a grand fortress built by the local chief, Vuong Chin Duc, who was allied with the French against the Viet Minh. It was evacuated in 1950 but it almost feels as if they left just yesterday. Finally, we will bike to the homestay. After that, dinner with host and try "happy water" there Day 2: Homestay - Lung Tao viewpoint - Thien Huong old house - Dong Van (around 30km) After breakfast, you will explore Dong Van Karst Geopark, biking to Lung Tao (....) You will bike 7 km to the top of Dong Van district. After that, come back Dong Van town and have lunch there. Continuing, you will bike to Thien Huong old village (...). On the way, you see terrace fields and H'mong people. We will visit a local school in Me Tia and meet the kids there. Finally, you come back Dong Van, the end of the tour about 17:00pm