Emporia varied greatly in their level of activity. Some seem to have functioned much like the permanent European trading colonies in China, India and Japan in the early modern period or those of the mediaeval Italian maritime republics in the Levant. Others were probably annual events for a few days or weeks like the medieval Champagne fairs or modern trade fairs.
^From one sea to another. Trading places in the European and Mediterranean Early Middle ages: Proceedings of the International Conference, Comacchio 27th-29th March 2009. 2012. p. 239.