Popular Goods: Some goods would become popular in the same region, meanwhile the sale price of them will have a great rise.
Hot Sales: Players will discover some Hot Sales in few ports, the lasting time of them is two days,  the profit you get will be up to several times through selling them.
But the Hot Sales are unique and special products which have the sole source and few output, players should via ocean trade to get these commodities.

The contrast between Popular Goods and Hot Sales

distance: Popular Goods can be bought in coastal water.
                 The distance between Hot Sales and its fashionable place is longer than 10,000 nautical miles.     
Time: The Hot Sales will last 48 hours.