What is the relationship between hope gas and accounts for waiting

The ancients thought view cloud hope can predict the gas, can even according to colour and shape of the clouds, to predict the fate of the nation,The warWinning or losing, personnel good or ill luck, but the ancients of the divination method has no scientific basis.Clouds, though cannot be directly predict the fortunes of good or ill luck, but the clouds and weather have a connection, the change of the gas can affect the natural environment and climate, can indirectly have influence to people.