平穏 へいおん
heion

Noun
na-Adjective
no-Adjective

1. tranquil; calm; restful; peaceful; quiet

その いち週間 しゅうかん 平穏 へいおん ふくした。
sono shiwa isshūkangoni hēonni fukushita.
The city was restored to tranquility after a week.