暑中 Kanji
暑中伺 Kanji
暑中見舞 Kanji
暑中見舞いをみんなに書いた。 I wrote to everybody inquiring after their health in the hot season.
暑中休暇 Kanji
暑中お見舞い申し上げます。 How are you getting along in this hot weather?
暑中見舞申上 Kanji