Additional niches and architecture added in the Tang dynasty to the Vairocana niche in the Fengxian Temple at Longmen

The niche with the colossal statue of Vairocana Buddha in the Fengxian Temple in Longmen was carved in the second year of the Shangyuan reign period of the Tang dynasty. At the beginning of the Kaiyuan reign, additional niches were carved into the same cliff wall. Based on spatial analysis of the surviving holes for architectural structures and their relation to the niches added later, it is inferred that the architecture in front of the niche was not built after the construction of these later niches. These two construction events could have belonged to the same construction phase. The construction of the architecture in front of the Vairocana niche completely altered the outer appearance and visibility of the statues, which then resulted in the relocation of worship activities from the open area to an enclosed space created by the wooden-structured temple in front of the niche.