diff --git a/app/controllers/games_controller.rb b/app/controllers/games_controller.rb
index a7d4a7c08..b01ff6c14 100644
--- a/app/controllers/games_controller.rb
+++ b/app/controllers/games_controller.rb
@@ -33,6 +33,7 @@ class GamesController < ApplicationController
     # logger.info("#################%%%%%%#{@game.outputs.first.out_put}")
     # @games = @myshixun.games.includes(:challenge)
     @challenges = Challenge.where(:shixun_id => @myshixun.shixun_id)
+    @shixun = @myshixun.shixun
     # @games_count = @games.count
     @game_challenge = @game.challenge
     @had_done = @game.had_done
diff --git a/app/controllers/shixuns_controller.rb b/app/controllers/shixuns_controller.rb
index ac496314e..711ff46e2 100644
--- a/app/controllers/shixuns_controller.rb
+++ b/app/controllers/shixuns_controller.rb
@@ -300,7 +300,7 @@ class ShixunsController < ApplicationController
   CODES = %W(2 3 4 5 6 7 8 9 a b c f e f g h i j k l m n o p q r s t u v w x y z)
   def copy_myshixun shixun, gshixun
     myshixun = Myshixun.new
-    myshixun.attributes = shixun.attributes.dup.except("id","user_id","visits","gpid","status", "identifier")
+    myshixun.attributes = shixun.attributes.dup.except("id","user_id","visits","gpid","status", "identifier","propaedeutics")
     myshixun.shixun_id = shixun.id
     myshixun.user_id = User.current.id
     myshixun.gpid = gshixun.id
diff --git a/app/views/games/_game_show.html.erb b/app/views/games/_game_show.html.erb
index 7547a2226..73caee78e 100644
--- a/app/views/games/_game_show.html.erb
+++ b/app/views/games/_game_show.html.erb
@@ -38,7 +38,7 @@
           <div class="fit -scroll">
             <div class="-layout-v -fit">
               <div class="-flex -scroll task-padding16 panel-box-sizing new_li" id="game_ready_knowledge">
-                <textarea style="display:none;"><%= @game_challenge.ready_knowledge %></textarea>
+                <textarea style="display:none;"><%= @shixun.propaedeutics %></textarea>
               </div>
             </div>
           </div>
diff --git a/db/migrate/20170518064248_sync_propaedeutics_to_shixuns.rb b/db/migrate/20170518064248_sync_propaedeutics_to_shixuns.rb
new file mode 100644
index 000000000..f34a762d0
--- /dev/null
+++ b/db/migrate/20170518064248_sync_propaedeutics_to_shixuns.rb
@@ -0,0 +1,12 @@
+class SyncPropaedeuticsToShixuns < ActiveRecord::Migration
+  def up
+    change_column :challenges, :ready_knowledge, :longtext
+    Shixun.all.each do |shixun|
+      ready_knowledge = shixun.challenges.first.try(:ready_knowledge)
+      shixun.update_attribute(:propaedeutics, ready_knowledge)
+    end
+  end
+
+  def down
+  end
+end