Chen Longwen: Visiting Professor of China Hard Pen Calligraphy Association, Senior Trainer of China Hard Pen Calligraphy, Vice Chairman of China Famous Calligraphy and Painting Research Association, Executive Director of China Art Society, Special Research Fellow of Academic Committee of China (Beijing) Institute of Management Science, and Member of Guangdong Calligraphers Association. He has been engaged in hard pen and soft pen calligraphy education for 20 years, devoted himself to the rapid study and research of hard pen calligraphy, and compiled a series of teaching materials such as "New Thinking Hard Pen Calligraphy Course". Its original three-level training methods of "seven-week accelerated hard pen calligraphy" and "Chinese character training → Chinese character training → fine character training" won the patents of "Golden Palace Grid" (patent number: 200930258667. 1) and "seven-week accelerated hard pen calligraphy" (patent number: 200930258666.7).