Continue along the Chinese border and pass through thousands of innumerable vast steep limestone karsts area and visit many villages which are home to Nung and Tay ethnic people. The Tay and Nung minority in Cao Bang province all migrated from the other side of the border. They have the same local dialect and culture.

Ban Gioc is one of the most beautiful waterfalls in Vietnam, which forms a natural border with China. The echo of the falls can be heard kilometers away. In rainy season, the waterfall makes the scenery even more magnificent. While here we will take a bamboo raft trip and have picnic lunch.

More beautiful ride along the Quay Son River, which on the other side is China, then direction south to Ha Lang. Overnight in local guesthouse.