The previous page is sending you to https://nehe2.com/entry/%E6%B0%B7%E5%AE%A4%E7%A5%9E%E7%A4%BE-%E5%A5%88%E8%89%AF-%E5%BE%A1%E6%9C%B1%E5%8D%B0/.

 If you do not want to visit that page, you can return to the previous page.