The sound was somewhat faint, and if it weren't for the countryside, a car starting up like this in the city would likely go unnoticed.
But the thing is, this is a ravine. In recent days, Xia Siyu had noticed that although roads were built here, few cars passed by. It was okay during the day—at least there was some activity after everyone got up. But come nightfall, aside from the sound of the wind and water, the cries of birds and insects, and with phones and televisions turned off, there was practically no noise from cars or hustle and bustle, as quiet as if one had traveled back to ancient times.