Tendon repair was meticulous work. One could spend a long period of time meddling with the flexor tendons in one pig's hindfoot.
Ling Ran was not in a hurry as well. He was just going through his steps in the operation at a leisurely pace. It was an opportunity for him to practice, and also an opportunity for him to explain the M-Tang technique to the other two.
The Master Level M-Tang Technique was great indeed. But it was still far from Perfect Level. The main difference lay in the success rate of the surgery and the recovery of the hand's capability after surgery.