The three apps are typical online marketplaces, similar to Amazon. You can search for a product, sift through options, buy items for delivery, and communicate with sellers.

Pinduoduo is China's major online discounter, where you can sometimes buy products at surprisingly low prices through joint purchasing with other buyers.

Taobao is another popular online marketplace that offers a wide range of products, spanning from clothing and electronics to unique and niche items, providing you with virtually limitless options for your shopping needs.

For expedited delivery, we recommend JD. Although you may not find as many niche options, it's still possible to buy most items, from technology to overseas products.

Pinduoduo made easy: How to shop and save

How to shop on Taobao: A step-by-step guide

Shopping on JD.com: A beginner's guide