訓 ふせ(ぐ) ・ 音 ボウ
Sino-Vietnamese: phòng
The left 阝 is an embankment or dike; 方 gives the sound bou. Pile up a dike before the flood arrives, and that is prevention: yobou (prevention), kokubou (defense).
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
手を洗って病気を防ぎましょう。 (てをあらってびょうきをふせぎましょう)
Let's wash our hands to prevent illness.