訓 よろこ(ぶ) ・ 音 カン
Sino-Vietnamese: hoan
欠 (open mouth) for meaning, the left part for sound: shouting with joy, as in Vietnamese hoan hô (hurray) and hoan nghênh (welcome).
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
皆が彼の成功を歓んだ。 (みんながかれのせいこうをよろこんだ)
Everyone rejoiced at his success.