The port city of H?i An and its bridge while in the 18th century. Watercolour engraving by Jacques Chereau (1688-1776), circa 1750. H?i An's great importance waned sharply at the end of the 18th century due to collapse of Nguy?n rule, which resulted within the Tây S?n Rebellion - which was against foreign trade.Các nhà tri?n lãm n?i ti?ng c?a N