I like this video so much I want it to be in the new place.
This is the top level of C&J technique. Notice how they generate power, both in the clean and the jerk. Rudnev drives the bell off the shoulders by thrusting his hips upwards and getting the torso out of the way. At the same way activating the calves. The same in clean, driving the bells up with all the muscles in the back and legs. I am not sure about Merkulin, but Rudnev was around 67 kg at the time. That’s driving almost his body weight up and down for ten minutes. Hardstylers can find a dark corner and jerk off quietly.
