The Buddhist iconography is typical of the Sakya school of Tibetan Buddhism .
The Buddhist iconography was intended to bring blessings on those who passed through the passageway , and to protect the Yuan state and its capital from misfortune .
The Buddhist iconography is typical of the Sakya school of Tibetan Buddhism , and was intended to bring blessings on those who passed through the passageway , and to protect the Yuan state and its capital from misfortune .