C667 Too Stupid!

"Miss Gu, please, I'm begging you. Solving this puzzle is a matter of life and death for me!" Zhang Zhen said, looking quite embarrassed.

Gu Yuan sighed helplessly, "Alright, but I'm only going to help you this once. If you don't have the talent for it, don't blame me for not teaching you well."

Hearing this, Zhang Zhen's eyes lit up, "Miss Gu, I promise I'll learn diligently."

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