The port town of Hội An and its bridge in the 18th century. Watercolour engraving by Jacques Chereau (1688–1776), circa 1750. Historic maps with the 17th and 18th centuries clearly show Hội An over the northern financial institution, linked to the sea by using the Đại Chiêm Estuary and linked to Đà Nẵng's Đại Estuary by another riv