China's energy strategy is being tested as tensions in Iran impact global oil markets . Asia is particularly exposed since around 80% of Gulf oil exports flow east, much of it through the Strait of Hormuz . Yet, while many Asian economies face heightened supply risks, China appears better shielded than its neighbors. The world's largest crude oil importer, China has spent years preparing for supply disruptions. Large strategic oil stockpiles, diversified import routes and suppliers, rising