The term 'Asian Chain' can be broken down into two crossword solutions: URALs (5 letters) and URAL (4 letters). URALs are a mountain range that stretches from the Arctic Ocean to the borders of Kazakhstan, China, and Mongolia. The Ural Mountains form a natural border between Europe and Asia, and have been an important part of trade and cultural exchange for centuries. URAL is a river that runs through the Ural Mountains, and is one of the longest rivers in Russia.