1, Sun Tzu's Art of War: China's ancient classic Sun Tzu's Art of War; Chinese and foreign countries admire it, and Tibetan reading is beneficial. Many young friends, civil servants, white-collar workers and many hard-pen calligraphy lovers like to practice calligraphy with artistic pens.
2, the pen copybook is also a hard pen Copybook for calligraphy, in other words, the pen is a hard pen! Pencils, ballpoint pens, etc. It's also a hard pen, except that there are some differences between handwriting and pen, they are all the same!