筑 is a simplified Chinese hanzi, listed here under the keyword “ancient lute”. It is built from 竹 (bamboo) and 巩 (bind). It appears as a component in 2 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “bamboo” + “bind”. 筑 is among the results, together with every other character containing the same shapes.
Open 筑 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.