Therefore, countries that do not belong to Zen Buddhism do not have Tam quan as the entrance to the temple.

Tam quan gateways derive from Buddhist temple architecture that was transmitted from India to Vietnam via China.

The two sides of the path are often decorated with couplets, the front of the door is written with the name of the temple or the name of the gateway.

Typically Buddhist couplets in Hán văn (Literary Chinese) line the centre doorway.

[6] Variations of the Tam quan are found in some pagodas built into five aisles such as in the case of Sét temple, Hanoi.