guójiādàimǎ
ㄍㄨㄛˊ ㄐㄧㄚ ㄉㄞˋ ㄇㄚˇ
Simplified 国家代码
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 國家代碼 and it comes back until you know it.