In just a few short years, shopping by livestream has become all the rage in China. Think QVC online and on steroids. Influencers, brands and retailers have swarmed apps like WeChat and Douyin — the Chinese version of TikTok — to hawk everything from makeup and clothes to cars and beef jerky.  Viola Zhou and Caiwei Chen, reporters at Rest of World, have been writing about this $500 billion market and how it’s changing in a stagnant Chinese economy.