・ 音 ボウ
Sino-Vietnamese: mậu
The shell 貝 at the bottom marks this as a money word (cowries were currency); the top gives the sound bou. Money changing hands is trade: boueki, foreign trade.
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
父は貿易の仕事をしています。 (ちちはぼうえきのしごとをしています)
My father works in trade.