Beyond the striped sail, Mount Inasa rises above the bay. Beneath the blush of dusk clouds, the roofs of Nagasaki peek out from the pine-covered coast. Under the rule of the Tokugawa shogunate, Japan isolated itself from the rest of the world in a policy known as sakoku (closed country). The port of Nagasaki hosted the exception to this rule, allowing carefully monitored trade with Dutch, Chinese, and Korean merchants. Perhaps the sail in the foreground alludes to the merchant ships that frequented this port. Today, Hizen Province loosely corresponds to Saga and Nagasaki Prefectures.