And in economic terms, the money spent on tribute to the two kingdoms was not such a burden, as it largely flowed back into Song territory in the form of payment for commodities, thereby stimulating production.
在經濟上每年送給兩國的歲幣，遼夏多數還是用來向宋朝購買商品，反而刺激著宋朝的商業生產，並不構成太大的負擔。