My son (2yrs and 9mths old) is very 慢熱 and shy too. He has started school for almost two weeks and still refused to participate in most of the activities. He just likes to observe. He is very stubborn too. Last time when I took him to interview, as expected, he refused to go into the playroom & interview room, not to mention refusing to talk to the interviewer. The only word he said is "No" :-( No matter what I said and what treat I gave him, he refused to do anything, very stubborn. However, he is very playful and is a fast learner at home. What can I do to help him overcome this serious stranger anxiety and have more self-confidence?