Soyocho (a tax system, corvee) paid to kokuga (provincial government office compounds) and gunga (office for county officials) were usually stored by doyoso warehouse (also called the doso warehouse) to distribute both for regular and for emergency uses as doyokoku (rice for regular use), which was sealed by each province's decision when it became full, after a certain period of time.
通常国衙・郡衙に納められた租庸調租は動用倉（どうようそう・動倉とも）に収容されて、動用穀（どうようこく）として通常あるいは非常時の出納が行われていたが、満載状態となって一定の時期を経ると、各令制国がそれぞれの判断で動用倉を封印して不動倉とした。