This article explores how memories of Muslim-Tibetan alliances predating Communist rule still shape social dynamics in Amdo. Based on ethnographic fieldwork in Northwest China, it analyzes narratives about relationships between Muslim Xidaotang merchants and Tibetan religious or secular institutions. These accounts reinterpret the past to make sense of present relationships, reshaping the meaning of historical interactions. The paper examines the emblematic case of the offering of a large cauldron to a Tibetan monastery – an act of alliance rooted in local conflict-resolution practices. This tradition of gift-giving is traced within a broader inter-institutional economy sustained by reciprocal hospitality and protection. The Tibetan designation of Xidaotang merchants as Chösoma (“new religion/teachings”) highlights the role of ethical reputation and technical skill in building trust. The paper concludes by examining the evolution of Xidaotang’s Tian Xing Long commercial label amid China’s ongoing economic reforms. The narratives reveal a trading culture grounded in moral valuation, shared responsibilities, and economic collaboration.