Ling Ran put on the gloves before he applied disinfectant on the patient's calf and massaged it. He exerted some force on it while he massaged it. Once he was done with the massage, he said, "Countdown for twenty minutes."
He only had around twenty minutes left to utilize his Skill Serum. If he managed to finish the surgery within twenty minutes, then the entire surgery would be performed using the Legendary Level Achilles Tendon Repair Technique.
Of course, even if he could not finish the surgery within twenty minutes, nothing bad would happen.
When Ling Ran performed his surgeries in the Orthopedic and Sports Medicine Center, the average time he took to utilize the Achilles Tendon Rupture Repair Technique was around thirty minutes. Since the preparatory work had been completed, and it was not an extremely complicated surgery, Ling Ran felt pretty relaxed.