宋 is a Japanese kanji written with 7 strokes, listed here under the keyword “sung dynasty”. It is built from 木 (tree) and 宀 (roof). In Remembering the Kanji by James W. Heisig it is frame 2326.
On KumiJi Glyph Explorer, open the parts search and type “tree” + “roof”. 宋 is among the results, together with every other character containing the same shapes.
Open 宋 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.