A Sina weather forecast thief with caching, which allows you to learn the principles of thieves and simple caching principles, with detailed notes. Friends who are interested in this aspect are welcome to download it. It is far from original. There are many tutorials for this code on the Internet, but no one has the intention to study the seemingly garish text. It is better to take a look at this refreshing code. Produced by Dream Chasing Sunshine, welcome exchanges, learning and progress.