About the Kanji meanings of new Japan's imperial era "令和(Reiwa)".
The meaning of "令(Rei)" is "order/command", but in this case it also includes other meanings.
"令(Rei)" was used as a idiom "令月(Reigetsu)" in the Manyoshu(万葉集).
The meaning of "令月(Reigetsu)" is "Auspicious month (Old name of February in the lunar calendar)".
Perhaps this "令(Rei)" is actually the meaning of "Auspicious".
Similarly, "和(Wa)" means "Calm down" in the original text (風和ぎ:The wind is calm down).