Its main duty is to keep peace between western countries, coordination of contradictions and disputes, to prevent the intrusion of foreign forces, the local social order maintenance, to ensure the smooth flow of the silk road. "But" govern more than and 30 countries, South East of Dawan Wusun, the "self translation, long, long domain monarch, prison, officials, Paul, 100, 1000, long long, and drains, pawner, Du Wei, phase to the king, all of these is the Pechan, Chinese officials confirm (the" Han West Region ").
