1。 This is a distribution system of rural collective labor. From the cooperative to the people's commune to the reform and opening up, the responsibility farmland system was implemented.

2。 This system adopts the way of collective appraisal, and divides the value of one day's labor of different rural laborers from 1 to 10 into several grades, that is, centimeters.

3。 According to the number and grade of attendance, record and calculate the centimeter value of accumulated labor.

4。 Subtract expenditure and collective reserve from the harvest and divide by all centimeters to get the harvest (income) per centimeter. Distribute grain and other convertible items or cash according to the size of centimeters as a year's income.