name of a river in Henan
漳 is a proper noun referring to a specific river in Henan, China. Its meaning is limited to this geographical name and does not carry a broader conceptual sense.
漳 combines 氵 (water) with 章, which likely contributes the sound. It was created as a specific river name, and the exact historical development of the phonetic choice is uncertain.
The water radical 氵 beside 章 points to a river. Picture a river in Henan with a chapter-like bend: 章 suggests a story, and the river is the Zhang River.
For ショウ, imagine a show being performed on the banks of the Zhang River: show -> ショウ, and the river's name sounds like 'show'.
Hokkien (language)