path: root/themes/hexo-theme-freemind.bithack/layout/_partial/post/category.ejs

  <%
  var cats = [];
  item.categories.forEach(function(cat){
    cats.push('<li><a href="' + config.root + cat.path + '">' + cat.name + '<span>' + cat.length  + '</span></a></li>');
  });
  %>
  <li>
    <%- cats.join(' ') %>
  </li>