Seisan Seisan The karate kata (alternate names Sesan, Seishan, Jusan, Hangetsu) literally means '13'. Some people refer to the kata as '13 Hands', '13 Fists', '13 Techniques', '13 Steps' or even '13 killing positions'. However, these names have no historical basis. Seisan is thought to be one of the oldest kata, being quite spread among other Nahate schools. Shito-ryu has its own version and different versions are now practised even in Shuri-te derivatives like Shotokan (called Hangetsu) and in Wado-ryu (called Seishan). Isshin-ryū also adopted this kata. This kata is also practiced in Korean styles such as Tang Soo Do and
Ryu Seong-ryong Ryu Seong-ryong Ryu Seong-ryong (November 1542 – May 1607), was a scholar-official of the Joseon Dynasty of Korea. He held many responsibilities including the Chief State Councillor position in 1592. He was a member of the "Eastern faction", and a follower of Yi Hwang. Ryu was born in Hahoe Maeul, Andong, Gyeongsang province (today a UNESCO World Heritage Site), to a "yangban" family of the Munhwa Ryu clan. Ryu is said to have been so precocious that he absorbed the teachings of Confucius and Mencius at the age of 8. In 1564 the 19th year of Myeongjong, he passed the