About
The character 澶 (chán) is primarily a geographical name for ancient waterways, notably the city of Chanzhou. It can also describe calm, slow-moving water. This phono-semantic compound combines the water radical 氵 on the left, indicating its connection to water, with the phonetic component 亶 (dǎn) on the right. The character is closely associated with the Treaty of Chanyuan (澶渊之盟), the landmark Song-Liao agreement, giving it significance in historical texts on 11th-century diplomacy and border treaties.
Etymology Hide