Luòbìdáfǎzé
ㄌㄨㄛˋ ㄅㄧˋ ㄉㄚˊ ㄈㄚˇ ㄗㄜˊ
Simplified 洛必达法则
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 洛必達法則 and it comes back until you know it.