Sesan

Thirteen Hands (十三手) The basic form of this kata contains eight defensive and five attacking techniques.  Thirteen is also a number representing good luck and prosperity in Chinese numerology.  Sesan is thought to be one of the oldest kata. The opening three sanchin dachi steps with the morote chudan uke (double middle level block) and chudan gyaku tsuki (reverse stomach punch) appear to be similar to that as in Sanseru kata, but, in performance and application they are not.  This is a powerful, fighting kata with many superb close-in fighting techniques. Watch Higaonna Sensei perform Sesan: