The speed of the high-speed train was extremely fast.
However, Chen Yun, who snagged a lift without a ticket, didn't stay on the high-speed train for long.
Although high-speed trains often tunnel through mountains and bridge over waters,
these actions are not undertaken deliberately but are necessities.
This is because the design concept of high-speed trains seeks a balance between efficiency, safety, and cost-effectiveness.
Tunneling and bridging overcome geographical obstacles, but they also imply high construction and maintenance costs.
Therefore, when planning high-speed rail lines, there's a preference to choose areas with flat terrain and stable geology to reduce unnecessary engineering work.
Only when encountering mountains or rivers that cannot be bypassed do they opt to tunnel and bridge to ensure the smooth passage of the trains.
Under such conditions,
the high-speed train only travels through a short distance between forests and lakes or rivers.
