Luóěrdìnglǐ
ㄌㄨㄛˊ ㄦˇ ㄉㄧㄥˋ ㄌㄧˇ
Simplified 罗尔定理
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 羅爾定理 and it comes back until you know it.