How to click on link?

C#
using OpenQA.Selenium.Chrome;
using OpenQA.Selenium.Support.UI;
using OpenQA.Selenium;

namespace Lab6_KiemThuNangCao
{
    internal class Program
    {
        static void Main(string[] args)
        {
            //Open Chrome
            IWebDriver driver = new ChromeDriver();

            //go to link
            driver.Navigate().GoToUrl("https://lms.poly.edu.vn");

            Thread.Sleep(1000);

            //login
            IWebElement menuButton = driver.FindElement(By.LinkText("Ha Noi"));
            menuButton.Click();

            // Go back to the home page and refresh the browser
            driver.Navigate().Back();
            driver.Navigate().Refresh();

            // Enter the login credentials and click the login button
            IWebElement usernameField = driver.FindElement(By.Id("thieuddph45736"));
            IWebElement passwordField = driver.FindElement(By.Id("Thieu1810"));
            IWebElement loginButton = driver.FindElement(By.Id("login-btn"));

            //quit
            driver.Quit();
        }
    }
}

/html/body/div/div/div[1]/div[2]/div/div[2]/div[1]/div[1]/button/p