jiǎnxiézhèndòng
ㄐㄧㄢˇ ㄒㄧㄝˊ ㄓㄣˋ ㄉㄨㄥˋ
Simplified 简谐振动
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 簡諧振動 and it comes back until you know it.