Question: what are the eight gates?
Answer: The Gate of Opening (開門, Kaimon), located in the brain. ... 
The Gate of Healing (休門, Kyūmon; English TV "The Gate of Rest"), located in the brain. ... 
The Gate of Life (生門, Seimon), located on the spinal cord. ... 
The Gate of Pain (傷門, Shōmon), located on the spinal cord.