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     Go  to the dictionary and look up the word "cheat". Touch the "V"
next  to  the  verb  to  open  the conjugation chart. Hold the L and R
triggers  for a few seconds. If done correctly, you will hear the word
"cheat"  in Mandarin. The cheat has now been activated. Now to use the
cheat,  you  must  return to the main menu, go to Options, then Sound.
Pressing  R will advance you 1 lesson, and pressing L will advance you
to  the beginning of the next lesson group (usually every 50 lessons).
Now  beware,  once  this cheat has been activated, it is saved to your
profile,  and  can't  be turned off until you delete your profile. And
there's  no  way to go back to previous lessons that you skipped over.
Sure,  you  can  visit  the  skipped  lesson  from the lesson map, but
there's  no  lesson map once you get past lesson 100. Thanks go to The
Game Programmer.