Letters & words

In "Letters & words" ("Sokoban lessons"), I added these three new puzzles:

 ##################
##    *  *  *   * ##
#* # ##.$#.$### # *#
## # #  *     # # ##
#  # $ * **** $ #  #
#* # .*.  *   . # *#
## $ # # **** # # ##
#  # $ *  *@* $ $  #
#* # . * *  * . # *#
##.####*******###.##
#  # $  ##### $ #  #
#* $ .  *     . # *#
## # # * **** # $ ##
#  # $*## ### $ #  #
#* # . *      . # *#
## # # *.*****# # ##
#  # # *      # #  #
#* # ###$.#$.## # *#
## *   *  *  *    ##
 ################## 

Author: laizhufu + gyjgw
Title:  伍仁月 (Five Kernel Mooncake) - MF8 51st Sokoban Competition, Extra
Comment: It's the Chinese Mid-Autumn Day on Sep. 19 this year. People eat moon-cakes on Mid-autumn Day. So this level is a mooncake with five kernel. 
Date: 2013.9.20
URL: bbs.mf8-china.com/forum.php?mod=viewthread&tid=99390&extra=page%3D1
Difficulty: 7.5
Best moves/pushes: 635/170 (Dante)

Yang Chao has given me this explanation: "The Chinese characters inside the mooncake is 伍仁, which means 'Five Kernel'. It means that there are five different things inside the mooncake: peanut, sesame, walnut, etc. It is a very common kind of mooncake."

        #####
       ## @ ##
       #  $  #
  ###### *** #####
  #      * *     #
  # ****** ***** #
  # #     $      #
  # . ######### ##
  # *     *   $ #
 ## * ### . #####
 #  * ### *   ##
## **   *****  ##
#  *  *** $ **  ##
# .* **   #  **  #
# * *   ####  *. #
###   ###  ##   ##
  #####     #####
 
Author: shamying
Title: 国庆快乐 (Happy National Day)
Comment:
大家国庆快乐。小关卡，非常容易。休闲一下而已。
Date: 2013.10.1
URL: sokoban.org
Difficulty: 6.5
Best moves/pushes: 516/114

Goals (and horizontal indoor wall): the character 庆, which means "to celebrate". It's the National Day of China today (Oct. 1st), we celebrate the National Day (I am grateful to Yang Chao this explanation). Regarding the puzzle, the greatest difficulty is in the top.

###################
#    #        *   #
#  #   #   *##*## #
# ####### *#**#**.#
#    #   *#   #   #
# ####### * *****.#
#    #    *   #   #
# ####### * **#**.#
#    #    *   @   #
# ####$## * ##### #
#    $    * # # # #
#  #$###  * # # # #
#  $   #  *  # #  #
####   ## * #   ###
#        #.#      #
###################
 
Author: laizhufu
Title: 美债危机 (U.S. debt crisis)
Date: 2013.10.17
URL: sokoban.org
Difficulty: 6.5
Best moves/pushes: 454/138

Interior walls, goals and boxes: 美债, which means "U.S. debt". Nice one, and good idea... This is the kind of puzzles which creates new Sokoban fans :)