Quick reply:
Open C7, and the relative areas of the spine where the block is.
Use the sword fingers (if someone else) or just concentrate on the dantien while visualizing and feeling Bright energy opens the spine.
Use the techniques from Level1&2, such as sword fingers to open the blockage and remove the blocked energy, you can send it 'through' yourself as well, OR use Bright energy to relax and open up the block.
~Z