The M-Tang technique was also known as the multiple strand intratendinous suturing technique. Just as its name implied, it utilized many strands, usually three strands of full set nylon threads to suture the tendon. Its tractility far surpassed that of the Kessler suturing technique and the double Krackow suture technique. It would not destroy the blood circulation on the dorsal side of the tendon as well.
But the fact that the M-Tang technique required the use of three strands of full set nylon sutures for a tiny tendon made it an obviously harder technique compared to other suturing techniques used to suture tendons.
This was also the reason Ling Ran said that he could not stop. Ling Ran had completed one-third of the suturing process. If he were to stop now and suture the two other strands later, the surgery would become even more difficult. Other suturing techniques may also not be suitable anymore.