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                                    Black Corporation: Joseon - Chapter 405
                            
                                                            
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                                        Chapter 404
                                
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... wheels with a large band made of iron, how truly unique?”
“It’s called a caterpillar track, Your Majesty.”
“Caterpillar track?”
“If I explain the principle…”
As Hyang tried to explain the principle, King Sejong raised his hand to stop him.
“Enough, let me see it move once. I’ll try to figure it out myself. It looks quite interesting somehow.”
“Yes, Your Majesty.”
‘I forgot! Father was also a man with little left but curiosity!’
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