liǎoruòzhǐzhǎng
ㄌㄧㄠˇ ㄖㄨㄛˋ ㄓˇ ㄓㄤˇ
Simplified 了若指掌
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 瞭若指掌 and it comes back until you know it.