Han Jingdi period. The policy of recuperation began with Emperor Gaozu of Han Dynasty and ended with Emperor Jing of Han Dynasty. After several generations of rulers, it has been implemented for 60 or 70 years, and finally the country has become rich and its national strength has been enriched. The content of the policy of solidarity includes adjusting and establishing a new system, stipulating that businessmen are not allowed to be officials, wear silk fabrics, ride horses with weapons, kiss Huns, destroy kings with different surnames, and seal kings with the same surnames.