The port town of Hội An and its bridge during the 18th century. Watercolour engraving by Jacques Chereau (1688–1776), circa 1750. Historical maps within the seventeenth and 18th centuries present Hội An about the northern financial institution, connected to The ocean through the Đại Chiêm Estuary and linked to Đà Nẵng's Đại Estuary