The reason that I implement this project is that I need to imporve my Ming. By implement this project in Racket with Ming lang style, I can have a practical feel about how does this lang do with programming and where should I improve my Ming lang. Another reason is that I found all the graphes about stocks's price and volume are in two different graph, while I noticed they have a strong connection in some cases of the stocks. I want to merge price and volume to show them in a single graph. By doing this, perhaps we can see the connection more eaily. I'm also curious about the I Ching for a very long time, then there cames I created this project and draw/merge the prices and volumes in a way of what described by the I Ching graphes, which graph is especially called Gua Graph by me.