Korea
Hangul Day (also spelled as Hangeul Day) is a day that celebrates the creation of the Hunminjeongeum (Hangul, Korean alphabet), which was inscribed to the UNESCO Memory of the World Register in 1997. Hangul was created by Sejong the Great in 1443 and proclaimed in 1446. Before the creation of Hangul, people in Korea (known as Joseon at the time) primarily wrote using Classical Chinese alongside native phonetic writing systems that predate Hangul by hundreds of years, including idu, hyangchal, gugyeol, and gakpil. However, due to the fundamental differences between the Korean and Chinese languages, and the large number of characters needed to be learned, there was much difficulty in learning how to write using Chinese characters for the lower classes, who often didn't have the privilege of education. To assuage this problem, King Sejong created the unique alphabet known as Hangul to promote literacy among the common people. Hangul Day was founded in 1926 during the Japanese occupation by members of the Korean Language Society, whose goal was to preserve the Korean language during a time of rapid forced Japanization. Today, both South Korea and North Korea celebrate Hangul Day as a national holiday.Sources
Ge Wang
Ge Wang (born November 2, 1977) is a Chinese American musician, computer scientist, designer, author, and professor, known for inventing the ChucK audio programming language 
and for being the co-founder, chief technology officer (CTO), and chief creative officer (CCO) of Smule, a company making iPhone and iPad music apps. He also helped create the Princeton Laptop Orchestra and later founded its Stanford counterpart Stanford Laptop Orchestra, as well as the Stanford Mobile Phone Orchestra. 
Wang is the designer of the Ocarina 
and Magic Piano iPhone apps. Wang is currently an Associate Professor at Stanford University’s Center for Computer Research in Music and Acoustics (CCRMA). Wang is the author of "Artful Design: Technology in Search of the Sublime (A MusiComic Manifesto)", a book on design and technology, art and life, created entirely in the format of a photo-realistic comic book, published by Stanford University Press in 2018.