C306
"No, my dear teacher is currently in a situation where there's no solution. You said that you can break it?" Sikong Da said in disbelief.
"Tsk, who doesn't know how to boast? If one wants to decipher these two superimposed diagrams, other than the principal who gave the question, no one else will be able to!" Zhao Zhi said with a face full of dissatisfaction