I was always impressed by Shoucheng’s brightness and intelligence during the period we were classmates. Later Shouheng left such a great and successful track in the academic and sciencetific arena, contributed essentially to the advances of human civilization made me feel really proud for have been his classmate. In August 2015 I and my family visited California and Shoucheng has showed his warm hospitality by inviting us for dinner on August 27 in Stanford. I still remember this happy and warm moment and will always.