Some years ago, never mind how long precisely, we were using Skype for group chat and meeting. Then Skype became unstable in China, other messengers, such as Li

Some years ago, never mind how long precisely, we were using Skype for group chat and meeting. Then Skype became unstable in China, other messengers, such as Line Telegram, Whatsapp, were also unstable or unavailable. That's why we switched to wechat.