The highland district of A Luoi, Hue City, boasts the pristine beauty of the Truong Son mountains and forests, with the white cascade of the A Nor Waterfall standing out amid endless stretches of green. What draws visitors here is not only the natural scenery, but also the distinctive cultural values of the Ta Oi and Pa Co ethnic communities.

That is the vast green casuarina forest that the people of Thai Duong Thuong village (formerly Hai Duong Commune, now part of Thuan An Ward, Hue City) planted decades ago to shield them from the winds, stop the sand, and protect the village. Amidst the vast sky and land, the casuarina trees grow lush and strong, becoming a sturdy shield, guarding the village from waves and winds, and the harshness of the sea.