ASH

The kata are performed entirely in 'Sitting position' Kiba dachi ("Horse riding stance"). The name Tekki itself (and Nifanchin) translates to "Iron Horse."
The Tekki series of kata are great conditioning for the legs and with practice, develop explosive power in the legs.
In the earlier days of karate training, it was common practice for a student to spend 2-3 years doing nothing but Tekki, under the strict observation of their teacher. Motobu Choki, famous for his youthful brawling at tsuji (red-light district), credited the kata with containing all that one needs to know to become a proficient fighter.
in This link you will find all you want to know about about this kata ,
http://www.squidoo.com/tekkishodanThis Video Show the Technique ..

This form has been used and practiced in many cultures, including China, Okinawa, Japan and Korea. The origins of this kata are obscure, however there are several theories as to its history. Some researchers believe the Passai kata is related to Chinese Leopard and Lion boxing forms, with some sequences bearing a resemblance to Leopard boxing (the opening blocking / striking movement in cross-legged stance) whereas others are more representative of Lion boxing (open handed techniques and stomping actions). Okinawan karate researcher Akio Kinjo believes that the name means "leopard-lion". Yet, in the style, Matsumuro Seito, the name of these katas are interpreted as "To break a fortress". Other historians have noticed the resemblance between some parts of Passai and Wuxing Quan ("Five Element Fist") Kung Fu. Here are the spellings in several Chinese dialects...