my student In September, 2011, Jie took my course of High Frequency Electronic Circuits as an elective course, in which some experimental lessons were included. At the end of semester, Jie succeeded in completing five lab reports according to her understanding. From her reports, I knew that she has mastered the basic principle of resonant tank and oscillation circuit completely. She also put forward several questions on designing crystal oscillator. Seeing her interest in these topics, I introduced some related books to her and hoped that she could know more about designing methods of crystal oscillator and parameter. As an active student in learning, in classes, she often asked lots of questions and gave out some unique views of her own. At last, she earned good grade in the High-Frenquency Electronic Circuits. Through our communications, I knew that with clear object of efforts in studies, regular timing of activities, meticulous in thinking, Jie showed great talents in studying this profession.