#include<LiquidCrystal_I2C.h>

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 20, 4);

void LCD_print(){
  LCD.setCursor(2,0);
  LCD.println("CityU");
  LCD.setCursor(0,2);
  LCD.println("EE5437");
}

void setup() {
  LCD.init();
}

void loop(){
  LCD_print();
  delay(3000);
  LCD.clear();
  delay(1000);
}