Normal Mental State

Gu Jun looked at the line of foreign text that resembled the crazed handwriting of a lunatic on the paper. The air he breathed in suddenly seemed to condense into a solid lump.

"Student Gu, what is this?" asked the man with the square face, his face still not revealing any expression.

Gu Jun's mental gears were whirling crazily. Did the country recognise this foreign language? Couldn't the three reviewers decipher the meaning of this sentence? For now, he assumed that they could understand it. He needed to find other reasons as to why he can write this sentence. He doubtfully replied, "I don't know, it seemed to be something in my parents' files. I vaguely have an impression of it."

"Please explain in detail about what happened."