訓 かい ・ 音 バイ
Sino-Vietnamese: bối
The character pictures an open shell. Shells were once money, so many money-related kanji contain it. Sino-Vietnamese bối, as in bảo bối (treasure).
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
浜辺で貝を拾った。 (はまべでかいをひろった)
I picked up shells on the beach.