丞 is a Chinese hanzi, listed here under the keyword “assist”. It is built from 氶 (name of a river in shandong) and 一 (one). It appears as a component in 6 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “name of a river in shandong” + “one”. 丞 is among the results, together with every other character containing the same shapes.
Open 丞 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.