Well Known in the City 5

There was no visible sunset that evening and neither was there a single trace of light in the sky. The sky was extremely dark and cloudy, as if the heavens were about to fall.

Because of the lack of sunshine, the sky… had turned dark very fast.

About two quarters into late afternoon, Qi Qingyao emerged from the toilet and glanced at the sky. She walked back feeling rather helpless. 

Suddenly, her ears picked up a faint but unusual sound. Although it was unpleasant to the ears, it was rhythmic. 

This… 

She had read about this in a novel before, could it be some sort of signal call? 　　 

However, she could not discern the source of the sound.

This annoyed Qi Qingyao a little.