Good for your Uncle =) as a music teacher myself, the online teaching idea going around works pretty well in my favour, since my primary subjects are History & Composition. It kind of complements computer usage so I'm lucky in this regard.

However, for others, for example my friend running a business in education requires his staff to do online teaching to kids as young as 2, 3 years old and it's just... not working. But with no choice, its the destruction of the business. Pretty sad.

WeChat is always a concern yeah... that's why I have a nice blend of WeChat, Whatsapp, Discord and Telegram =)