Hello, everyone. Finally, my first book, iPad Calligraphy, has been published. From emotional records to merchandise designs, we learn professionally! I included an iPad calligraphy class to become a daily designer in a book. For those who buy books, we also offer brushes and example files that are good to write in Korean! You can buy books at online bookstores right now, and you can buy books at offline bookstores in two to three days. And online bookstores (Kyobo, Aladdin, Yes24, Interpark) will give you a raffle event for my own set of 15 Korean brushes. Let me ask of your attention.