were established. Based on the keichō, a tax system was established called (租庸調 So-yō-chō). Tax was levied on rice crops but also on several local products...

the Tang dynasty's corvée taxation system, known as the soyōchō system (租庸調, soyōchō). Taxes were paid in the form of rice and other crops under this...

"land tax (paid by rice)"). The three forms of taxes were known as Soyōchō (租庸調) under the Ritsuryō system. Kazue-no-kami (主計頭) - "Director" Kazue-no-suke...