Wishing for a good harvest and harmony.
The hexagon is an overlapping upper and lower triangle, symbolising harmony.
The upper triangle represents spiritual creativity and the lower triangle material creativity, which are said to be in balance.
The tortoise, together with the crane, symbolises longevity.
All things are formed from clouds and it was believed that clouds drifting in the sky were a sign of good things to come.
People believed that there was a paradise above the clouds and made wishes.
Clouds call for rain, which represents fruitfulness and fertility, and they also wish for good things to happen and for good fortune to rise.