What does the 'x' mentioned by car sellers mean?

[AshlynRose]

X generally means ten thousand. Things to note when buying a car: When picking up the car, pay attention to the odometer reading, which is usually within 100 kilometers. Check if there are any debris in the radiator fins, if the seat protective packaging and the plastic sheet on the front of the car are intact, and if there are any stains on the interior seats and dashboard. Remember to ask for the production date and transportation date when picking up the car, and compare them carefully with the car you are picking up. Be sure to check the fuel level; new cars usually have less fuel, so remember to refuel after picking up the car. Key issues when buying a used car: Check the car's background, so-called background; verify its identity, meaning check if the car has proper documentation and can be transferred. Check its violation records to see if there are any major violations that have not been cleared. Pay attention to the car's engine and appearance.