In today's hi-tech global village, no matter where you live, the most important communication question is, “What's the go-to chat app?” rnIn China, it's WeChat. But the Tencentdeveloped app is so much more than just a messaging and social media app. It's a payment platform, a way to buy travel tickets, a news aggregator, a taxi hailer, and amid the novel coronavirus disease pandemic, one of the leading ways to provide a QR-generated health code.