Introduction to the mountain gate: The mountain gate of Longshan Temple in Lukang is an independent building with double eaves and a mountain top. It is integrated with the walls on both sides and is magnificent. On both sides of the eaves, there are three pillars on each side, two of which are square and one is round, which represent "all directions" and "Three Yang Kaitai". Together with the other six pillars inside the door, the twelve heavenly stems and earthly branches are formed.