大道系统是一种的商户-客户服务模式，大道系统可为客户提供消费返利，为商户提供客户导流功用，相当于为商户提供一种特别的广告服务。
Great-One system is a kind of business - customer service model, it can provide consumer rebates to customers, provide customer guiding function, same as to provide a special advertising service for businesses.