The Analysis about the Situations and Reasons about the Trade in Ningxia Town in the Middle and Post-Period in Ming Dynasty

Year 5 Longqing(1571)in the Ming Dynasty,An Da was promoted and the relationship between the Ming Dynasty and Mongolia was improved.The northern area along the border was in peace.The trade between Mongolia nationality and Han nationality began to be prosperous in the regular time and places in Ningxia Town.However,the trade in the Middle and Post-Period in Ming Dynasty was obviously behind the other nine towns.The reason was that the government was doing business and the folk trade was not developed;the Ming government limited the trade;the investment was not enough and it was delayed and used for other purposes;the wars affected the trade too.