It was hard to leave home this morning because my son's summer vacation started from today. Although he also went to the school, all he was going to do in there were reading books in the air-conditioned library, swimming in the cool water pool, and playing with his friends. On the other hand, I had to attend a meeting, which made my stomach sour. This week I must be half-minded to most of my daily jobs, until I finally come through the presentation at Portland next week.