欣 is a Chinese hanzi, listed here under the keyword “happy”. It is built from 斤 (a catty (approximately 600 g)) and 欠 (owe). It appears as a component in 6 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “a catty (approximately 600 g)” + “owe”. 欣 is among the results, together with every other character containing the same shapes.
Open 欣 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.