Black Market Exchange 
	[Unlock Condition] 
	After passing Krakow instance. 
	[Introduction of Black Market] 
	1.You can use adequate resources to exchange for the insufficient resources. 
	2.Time adds when exchanging and the players can't exchange any more when the time over 1 hour. 
	3.The players can exchange for fund、food、oil on the black market. 
	[Special Effect] 
	1.After occupying Minsk, CD will reduce and resources will increase 10% 
	2.After developing Black Market tech Double, the trade will double 
