historic Tibetan scriptures. For a time, it was a hotel. Two flagstone doring (inscribed pillars) outside the temple, flanking its north and south entrances, are worshiped by Tibetans. The first monument, a March 1794 edict known as the "Forever Following Tablet" in Chinese, records advice on hygiene to prevent smallpox; some has been chiseled out by Tibetans who believed that the stone itself had curative powers. The second, far older, pillar is high with a crown in the shape of a palace and an inscription dated 821 or 822. The tablet has a number of names; "Number One Tablet in Asia", "Lhasa Alliance Tablet", "Changing Alliance Tablet", "Uncle and Nephew Alliance Tablet" and the "Tang Dynasty-Tubo Peace Alliance Tablet". Its inscription, in Tibetan and Chinese, is a treaty between the Tibetan king Ralpacan and the Chinese emperor Muzong delineating the boundary between their countries. Both inscriptions were enclosed by brick walls when Barkhor Square was developed in 1985. The Sino-Tibetan treaty reads, "Tibet and China shall abide by the frontiers of which they are now in occupation. All to the east is the country of Great China; and all to the west is, without question, the country of Great Tibet. Henceforth on neither side shall there be waging of war nor seizing of territory. If any person incurs suspicion he shall be arrested; his business shall be inquired into and he shall be escorted back". According to the Dalai Lama, among the many images in the temple was an image of Chenrizi, made of clay in the temple, within which the small wooden statue of the Buddha brought from Nepal was hidden. The image was in the temple for 1300 years, and when Songtsen Gampo died his soul was believed to have entered the small wooden statue. During the Cultural Revolution, the clay image was smashed and the smaller Buddha was given by a Tibetan to the Dalai Lama. In 2000, the Jokhang became a UNESCO World Heritage Site as an extension of the Potala Palace (a World Heritage Site since 1994) to facilitate conservation efforts. The temple is listed in the first group of State Cultural Protection Relic Units, and has been categorized as a 4A-level tourist site. On February 17, 2018, the temple caught fire at 6:40 p.m. (local time), before sunset in Lhasa, with the blaze lasting until late that evening. Although photos and videos about the