èrchóngxiàbiāo
ㄦˋ ㄔㄨㄥˊ ㄒㄧㄚˋ ㄅㄧㄠ
Simplified 二重下标
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 二重下標 and it comes back until you know it.