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Ke Lan and his partner had nothing to show for it, so they had no choice but to leave school and return to the office.
In the next few days, Ke Lan and Zhen Hong kept coming to the school to monitor the situation.
Unfortunately, they still did not find anything suspicious.
It had already been a week since the first case.
Ke Lan and Zhen Hong stood on the rooftop of the teaching building
