<P> Rand disguises himself as Daredevil to convince the media and the public that Matt Murdock is not the masked vigilante . </P> <P> During the Civil War, he opposes the Superhuman Registration Act, joining Captain America while still pretending to be Daredevil . Rand is apprehended by Pro-Registration forces . He is later freed from the Negative Zone Prison, joining Captain America's team to battle Iron Man's forces . </P> <P> After the arrest of Captain America, Rand joins the New Avengers, an underground group provided with secure accommodation by Doctor Strange and which includes his former teammate Luke Cage . In the public eye, Rand is able to avoid arrest with legal loopholes . Rand leaves the New Avengers due to a variety of problems but lets them know, if they ever need him, to give him a call . He later aids the New Avengers in locating and rescuing Cage from Norman Osborn after he suffered a heart attack and was summarily taken into custody as a fugitive . </P> <P> Orson Randall, Danny Rand's immediate predecessor, seeks out Danny Rand in New York and gives him The Book of the Iron Fist, a sacred ledger supposedly containing all the kung fu secrets of previous Iron Fists, which Randall claims will be necessary if Rand is to compete successfully in the coming tournament of the Seven Champions . The Steel Serpent, whose powers have been greatly augmented by the Crane Mother, dispatches Randall . On the brink of death, Randall surrenders his chi to Rand, giving him sufficient power to battle the Serpent to a standstill . After the battle, Rand is summoned by his master, Lei Kung (who is also the father of Steel Serpent) to compete in a tournament that will decide the cycle according to which each of the Seven Cities of Heaven appears on Earth . However, the leaders of the Seven Cities had secretly erected gateways between Earth and each city without the knowledge of the populace . The corruption of the leaders of the Seven Cities of Heaven spurs Iron Fist, Lei Kung, Orson Randall's daughter, and John Aman to plan a revolution . Iron Fist discovers that Crane Mother and Xao, a high - ranking HYDRA operative, are planning to destroy K'un Lun by using a portal . Upon learning of the plot, Steel Serpent helps Rand and the other Immortal weapons defeat Xao . </P>

Where did iron fist learn his martial arts skills