the right to farm and live on the land, but the right to independently sell or lease the topsoil rights to another party. So as long as another party held topsoil rights, the party holding subsoil did not have right to actively use the land or evict the topsoil owner. Land, like other forms of property, was seen as being held collectively by the family and not individuals within the family. Another concept in imperial Chinese property rights was dianmai (典賣/典卖), more commonly known as huomai (活賣/活卖), or conditional sales of property that allowed the seller (i.e., his family) to buy back the land at the original price (without interest). The assumption was that land, having been held by a family for generations, should stay with the same family. From the Sui dynasty onwards, women could not hold property directly and, for land to stay in the same family, it had to pass between male heirs following the rule of primogeniture. Procedure Suspects and criminals were arrested by the county police or the posthouse chiefs who were subordinate to the county chief of police. One important principle of traditional Chinese law was that a person could not be convicted of a crime without a confession. Because a confession was required for a conviction and sentence, torture was often used to elicit such a confession. A common tool was the bastinado, applied to the buttocks and thighs. During the Qin and Han, local magistrates were fully authorised to apply the full scale of punishments, including the death penalty. In principle all criminal cases, whatever their gravity, were heard first in the court of the district in which the facts occurred. The magistrate investigated the facts, determined guilt or innocence, and then proposed the sentence for the offence as prescribed by the code. Whenever a sentence of greater severity than a beating was applicable, it was necessary to forward the case to the next superior court in the hierarchy, that of the prefect, for rehearing. The prefect's decision was final only in cases of penal servitude. Cases of exile or death were automatically reviewed by the provincial governor. All homicide cases and all cases attracting the death sentence were sent to the capital for review by the highest judicial tribunal, the Board of Punishments. No sentence of death could be implemented, except in extreme circumstances, without express approval from the emperor himself.