Jade Mountain Temple, known locally as "Den Ngoc Son", is located on Hoan Kiem Lake in the center of the capital, Hanoi. Its expansion in 1865. The temple buildings include the “Pen Tower”, “Ink Tiles”, “Moon Pavilion” and “Pavilion Against the Waves”, all of which have symbolic meanings, and it is worth noting that visitors should show respect for these temples by wearing appropriate clothing Before visiting it, as is common in the area.