Answer
Yuk Wu-dang was the pen name of Yun Hyon-seok, a Korean independence activist and writer. He adopted this pseudonym to protect his identity and avoid persecution by the Japanese colonial authorities during the early 20th century. The name "Yuk Wu-dang" is derived from the Chinese characters for "six" (yuk) and "dance" (wu-dang), which symbolize the six provinces of Korea and the struggle for independence.