Ban Gioc Waterfall is a breathtaking natural wonder located in Cao Bang Province, on the border between Vietnam and China. It is famous for being the largest natural waterfall in Southeast Asia. The water falls from a height of over 30 meters through multiple limestone tiers, surrounded by majestic mountains and lush forests. Visitors to this landscape can enjoy exciting activities such as taking a bamboo raft to get a closer look at the falls, taking stunning photos, and exploring the nearby Nguom Ngao Cave. To protect this pristine site, it is important for everyone to avoid littering into the river. Additionally, protecting the upstream forests and maintaining the original landscape are essential to preserve its beauty for the future.

In the past, students only had lessons in the mornings. Typically, they only attended school in the mornings because, back then, simply having the opportunity to study was considered a great fortune. The main subjects were limited to Literature, Mathematics, and History. During break time, they only played folk games like tug-of-war, Ô ăn quan (Mandarin square capturing), and blind man's bluff, without relying on phones as frequently as students do today. They also had summer vacations, similar to now, but they didn't have as much free time as current students; they spent their time helping their parents with household chores, such as herding buffaloes, cutting grass, or going to the sea to catch seafood to earn money. The only means of transportation they had to get to school was their own two feet.