多方讨价还价系统，可以根据买卖双方的意愿和条件搜寻合适的商品和服务，按照双方愿意出的价格，直到得出一个买卖双方的均衡值，买卖双方根据自己的需求选择合适的交易者。-Multi-bargaining system, in accordance with the wishes and conditions of buyers and sellers search for the right merchandise and service, in accordance with the willingn