Huizhou Zhongkai Tianyi City has a musical pen. There is a Bai Le pen in the famous boutique on the east side of Zhongkai Tianyi City. In the past hundred years, Perot (Bai Le) has established a world-famous brand with its persistence in pen making. Bai Le Group was founded in 19 18, and was founded by Professor Ryosuke Yanzaki and Mr Masao Tian. Professor Ryuke Hiraki is an engineer who teaches at Tokyo Higher Merchant Marine School. In response to the public's demand for writing tools at that time, he developed the first self-produced fountain pen with his professional engineering knowledge, which quickly became popular.