接口地址
https://cn.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1
拼接成完整的url
https://www.bing.com/ + <url>
直接获取
https://api.isoyu.com/bing_images.php
其他图片获取方式
eg: https://picsum.photos/1600/900
http://img.xjh.me/random_img.php
https://source.unsplash.com/random
https://api.dujin.org/bing/1366.php
