Living in China for the past two years - Important thing to remember - in China and in most of South-East Asia the tech boom came at a later stage when smartphones were already prominent. Android + Chinese manufacturing made it possible to produce cheap smart phones. The result is that these countries have completely skipped the laptop phase and went straight to smartphones, most of the population doesn't even know what a laptop is. What the west calls eCommerce (amazon, Ebay etc) is called mCommerce in Asia (Taobao app, JD.com App etc). Asian consumers find it easier and more natural to shop using smartphones rather than laptops like Western consumers.

Oh and yes, When I leave the house I don't even take my wallet, everything is paid using wechat.