[Unlock Condition] 
	After passing the Krakow instance 
	[Introductions] 
	1. Market purchase chances grow once every hour, and the accumulating limit is 24;
	2. After developing Expand Depot tech, market purchase chances grow once every half an hour;
	3. Available goods in the market: War fund, Oil, Modules, Iron (Unlock the tech of Iron Market) and Alloy (Develop the tech of Alloy Market)
	4. Level of the goods gets higher, the price-quality ratio gets more.