The process is: the first to remove the wooden floor, choose a good clean pile up the spare wall covered with a layer of plastic film (casually stick on the line) and then in the vertical direction of the wall every thirty centimeters nailed a wooden (You can buy 10MM thick wood line, I use the shirt wood, direct hit the drill drill, stuffed into 8MM rubber particles, and then knock into the nail, but also every 30-50CM nail)