The TVXQ duo revealed some shocking incidents they experienced from their 'sasaeng fans' on "Knee-Drop Guru". When MC Kang Ho Dong asked the two members the question, "Did you ever have a hard time because of the excessive love you received from fans?'. Changmin responded, "I changed my phone number because I got a lot of prank calls. 5 minutes after I changed my number, I got a text on the number saying 'You changed your number', which shocked me". Yunho added, "It's very mysterious. I changed my phone number again and I got a text saying 'Changing your number frequently isn't good'. I also got pictures of items that could only be found in our dorm. I was very surprised at that time". Changmin made the audience laugh by saying in jest, "If you know my phone number, it means that you have looked through my personal information, which is a violation of the law. Taking pictures of our dorm is also a violation of the law as it's housebreaking". Source: TV Daily via Nate