It's his first visit to the country as state head of the Swiss Confederation.

作为瑞士联邦国家元首，这是他首次对中国进行国事访问。

The Swiss Confederation got its independence from the Holy Roman Empire in 1499, making it the oldest independent nation on this list.

瑞士联邦于 1499 年从神圣罗马帝国获得独立，使其成为这份名单上最古老的独立国家。