csdn-tweaker.user.js

// ==UserScript==
// @name         CSDN tweaker
// @namespace    http://themactep.com/
// @version      0.1
// @description  Show full articles
// @author       [email protected]
// @match        https://*.blog.csdn.net/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=csdn.net
// @grant        none
// ==/UserScript==

(function() {
  'use strict';

  document.querySelector('.hide-article-box').style.display = 'none';
  document.querySelector('#article_content').style.height = 'auto';
  document.querySelector('#article_content').style.overflow = 'auto';
})();