并进一步论证徐葆光在加强中琉政治交往、测绘琉球地图、促进册封贸易、传播中国文化等方面所做的突出贡献。
In the basis , the author ulteriorly demonstrates Mr Xu 's great contribution in enhancing political intercourse , mapping , accelerating the diplomatic trade , spreading abroad Chinese culture .
徐葆光