终于恢复了网站编辑功能。
其实就是一个插件过期了。 只不过登陆到后台， 需要静下心来做一些搜索。
顺便测试：
This entry was posted on 星期三, 23 8 月, 2023 at 1:17 下午 and is filed under 学习感悟. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.
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![[f_k = f(x_k),\: x_k = x^*+kh,\: k=-\frac{N-1}{2},\dots,\frac{N-1}{2}]](http://astronomy.lamost.org/blog/wp-content/ql-cache/quicklatex.com-a9b032e0428f14148bbb9d2d2a38b35b_l3.png "Rendered by QuickLaTeX.com")