diff --git a/app/controllers/attachments_controller.rb b/app/controllers/attachments_controller.rb
index 46be2ef4..65a8f2f9 100644
--- a/app/controllers/attachments_controller.rb
+++ b/app/controllers/attachments_controller.rb
@@ -886,6 +886,8 @@ class AttachmentsController < ApplicationController
       @shixun
     elsif @attachment.container_type == 'Inform'
       @inform = @attachment.container
+    elsif @attachment.container_type == 'CompetitionModuleMdContent'
+      @md_content = @attachment.container
     elsif @attachment.container_type == 'Challenge'
       @challenge =  @attachment.container
     elsif @attachment.container_type == 'Competition'
diff --git a/app/controllers/competitions_controller.rb b/app/controllers/competitions_controller.rb
index cd3a9ef6..3b438e06 100644
--- a/app/controllers/competitions_controller.rb
+++ b/app/controllers/competitions_controller.rb
@@ -89,7 +89,9 @@ class CompetitionsController < ApplicationController
   def create_md_content
     md_content = CompetitionModuleMdContent.find params[:md_content_id]
     md_content.update_attributes(params[:md_content])
-    md_content.save_attachments(params[:attachments])
+    attachment_ids = params[:attachments].values.map{|a| a[:attachment_id]}.compact
+    Attachment.where(:id => attachment_ids)
+        .update_all(container_id: md_content.id, container_type: 'CompetitionModuleMdContent') if attachment_ids
     redirect_to md_contents_competition_url(:md_content_id => md_content.id)
   end
 
@@ -103,7 +105,9 @@ class CompetitionsController < ApplicationController
   def update_md_content
     md_content = CompetitionModuleMdContent.find params[:md_content_id]
     md_content.update_attributes(params[:md_content])
-    md_content.save_attachments(params[:attachments])
+    attachment_ids = params[:attachments].values.map{|a| a[:attachment_id]}.compact
+    Attachment.where(:id => attachment_ids)
+        .update_all(container_id: md_content.id, container_type: 'CompetitionModuleMdContent') if attachment_ids
     redirect_to md_content_competitions_path(:md_content_id => md_content.id)
   end
 
diff --git a/app/models/competition_module_md_content.rb b/app/models/competition_module_md_content.rb
index a88e892c..4653f112 100644
--- a/app/models/competition_module_md_content.rb
+++ b/app/models/competition_module_md_content.rb
@@ -1,6 +1,7 @@
 class CompetitionModuleMdContent < ActiveRecord::Base
   # attr_accessible :title, :body
   belongs_to :competition_module
+  has_many :attachments, :dependent => :destroy
   acts_as_attachable
 
 end
diff --git a/app/views/competitions/_ccf_competition.html.erb b/app/views/competitions/_ccf_competition.html.erb
index 36429708..284bc1a4 100644
--- a/app/views/competitions/_ccf_competition.html.erb
+++ b/app/views/competitions/_ccf_competition.html.erb
@@ -11,6 +11,12 @@
         <a href="<%= md_content_competitions_path(:md_content_id => com_module_2.try(:competition_module_md_content).try(:id)) %>" target="_blank" class="shixun-btn">使用说明</a>
       </p>
     </div>
+    <div class="ccf-position-shixun" style="top: unset !important;bottom: 120px;">
+      <p class="inline">
+        <% com_module_3 = @competition.competition_modules.where(:hidden => 0, :name => '案例提交要求').first %>
+        <a href="<%= md_content_competitions_path(:md_content_id => com_module_3.try(:competition_module_md_content).try(:id)) %>" target="_blank" class="shixun-btn">案例提交要求</a>
+      </p>
+    </div>
   </div>
   <img src="<%= named_attachment_path(@images[3], @images[3].try(:filename)) %>" width="100%"/>
   <div class="pr">