May I ask you all: Today is the first day I picked up my car. I have been driving at a speed limit without exceeding it according to the signs, but almost all the cars have overtaken. When there is only one lane, the cars behind are piled up, which makes me feel very anxious ?

Ignore others and just drive at the speed limit. Anyone who might overtake is likely a tourist.

Although driving at the speed limit, if there is a vehicle trying to overtake, try to give way instead of competing for the right of way. When there are too many cars behind, your speed may be too slow, and driving slowly in the fast lane may also result in a warning from the traffic police.