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".