Task 
	[Smooth Process] 
	Next task will be sent out after a task is finished. 
	Tasks include upgrading buildings, defeating NPC, buying equipments and collect appointed items and so on. 
	[Task Guide] 
	Click the task signal, and the interface of completing the task will be showed, where an arrow will tell you what to do. 
	[Task Rewards] 
	After finishing the task, the interface of receiving rewards will be showed.