Yenisei
…45 ft). The first written mention of the Yenisei River, as "Kem", dates back to the 7th century in Tang dynasty China, at the time of contact with Yenisei Kyrgyz of this region. The word Jian Shui (劔水; "Jian River") appears in the Book of Zhou, vol. 50, and the History of the Northern Dynasties, vol. 99, while…