I think I haven't had time to explain this set of photos I took yet. These three kids( including the hidden one ) were totally strangers when I went to I-Lan couples weeks ago. They were just playing something which I don't quit understand. Maybe I am too old to know their games.I tried to take pictures of them. At first, they refused to do so and just ran away. After a while with my efforts playing with them, they finally saw me as an acquaintance and let me take photos of them. It really isn't easy to take photos of real people, I think. Unlike plants or other animals, you must spend time knowing them and discussing with them. That's the most difficult part of Photography. Know I really respect the pros at National Geographic. They really did many amazing pictures of real people.