訓 ふし,-ぶし,のっと ・ 音 セツ,セチ
Sino-Vietnamese: tiết
Bamboo 竹 plus 即 for sound: the nodes dividing bamboo into sections, like seasons dividing the year.
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
季節の変わり目は風邪をひきやすい。 (きせつのかわりめはかぜをひきやすい)
It is easy to catch a cold when the seasons change.