From a high-altitude reservoir on the upper Yellow River, where glacier-fed waters run cold and clear, China has quietly entered a trade long governed by Norway and Chile. The salmon raised at Longyangxia — firm-fleshed, carefully farmed, and now served in restaurants from Bangkok to Dubai — represents something larger than a new export: it is the emergence of an inland nation as a steward of the sea's most coveted fish. Geography, patience, and deliberate craft have conspired to shift the boundaries of a global market.