jìyìguǎngdù
ㄐㄧˋ ㄧˋ ㄍㄨㄤˇ ㄉㄨˋ
Simplified 记忆广度
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 記憶廣度 and it comes back until you know it.