diff --git a/com/rental/TestCar.java b/com/rental/TestCar.java
deleted file mode 100644
index 553249c..0000000
--- a/com/rental/TestCar.java
+++ /dev/null
@@ -1,25 +0,0 @@
-package com.rental;
-public class TestCar {
-    public static void main(String[] args) {
-        Car car1 = new Car("XiangA12345", "BYD", "Han EV", 280.0);
-        Car car2 = new Car("XiangB67890", "Tesla", "Model 3");
-        Car car3 = new Car("XiangC00001", "Toyota", "Camry", 350.0);
-        System.out.println("=== Initial Car Information ===");
-        car1.displayInfo();
-        car2.displayInfo();
-        car3.displayInfo();
-        System.out.println("\n=== Test Rent/Return ===");
-        car1.rentCar();
-        car1.rentCar();
-        car1.returnCar();
-        car1.returnCar();
-        System.out.println("\n=== Calculate Rent ===");
-        double total = car2.calculateRent(5);
-        System.out.println("car2 5-day rent: " + total);
-        System.out.println("\n=== Test Invalid Rent ===");
-        car3.setDailyRent(-100);
-        System.out.println("car3 rent: " + car3.getDailyRent());
-        System.out.println("\n=== Total Cars ===");
-        System.out.println("Total: " + Car.getTotalCars());
-    }
-}
\ No newline at end of file