The Granary embodies the amassment and exchange of wealth.
The existence of granary can be traced back to the dawn of civilization once human being learns how to crop. Granary built for mere storage is far from the concept of architecture though.
Spiritual and intellectual worship is found very soon in human creation. Granary thus inevitably signifies greater commitment and responsibility, as crops being the life line of our society and wealth of fundamentality. The granary is built for the protection and collection of human assets.
CHINESE ANCIENT MOTTO: Crop values more than gold and jade
Crop is most precious in a way it feeds beings. Hence the significance of granary well beyond that of any other architecture.