The port city of H?i An and its bridge in the 18th century. Watercolour engraving by Jacques Chereau (1688-1776), circa 1750. H?i An's great importance waned sharply at the conclusion of the 18th century due to collapse of Nguy?n rule, which resulted with the Tây S?n Rebellion - which was opposed to foreign trade.Showroom within a transformed Quan