C34 Thirteen Methods of Solving Shock

Just at that moment, Yang Pann had already finished writing the third method in a minute.

Following that, he walked to the left side of the blackboard. Amidst the shocked cries of his classmates, he picked up the eraser and quickly erased the second solution. Then, three lines of silver ink appeared once again — —

Method Four —

Yang Pann began to answer the fourth method again. At this time