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... was shocked to the point his pupils shook when he saw the clear answer written at the end.
Qiao Yi was momentarily speechless, only able to stare blankly at Qiao Ying. But the blood in his body was silently boiling and clamoring.
It's done.
Countless teams had scrambled over each other, spent half a year racking their brains and wracking their wits. Even the mathematical genius Xu Zhiyi was unable to solve this problem. Yet his sister was able to do it in less than half ...
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