chuánshūkòngzhì
ㄔㄨㄢˊ ㄕㄨ ㄎㄨㄥˋ ㄓˋ
Simplified 传输控制
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 傳輸控制 and it comes back until you know it.