Ever since he was in school, William has been a very good tutor even towards his schoolmates. I was his schoolmate from JC, if not for his helpful coaching, I would not have passed my mathematics paper. I like him for his kindness and dedication in the subject of mathematics and the like, which not many tutors and educators have. Especially over the years, his university studies have been in this specialisation, I believe with his passion in mathematics and physics and dedication in teaching, his tutees receive not only good mentoring but also a re-ignition of interest, which is the key to doing well in studies.