I'm tired! It was too high last weekend. Stayed up everyday. First work day should have more enthusiasm,but I'm so tired. This morning I visited a customer in industry park. Some troublesome issue always delay their production.Today is very important for solving their issue because their customer will inspect the factory. Luckily we studied together and eventually solved the trouble till noon. I came back to my office. It was hot outside although it's now beginning of autumn,and I was tired.I wanna sleep,but it's hateful work time just for me now...