Chest tightness, shortness of breath, jump Xiehuo

Over the years , to see a lot of people say one thing and do another, or people of a forward , behind a row . Over the years , always think , work comes in handy, often finally want to understand. But just recently, it felt out of , in fact, never understood before, and not without sorrow that , they might never live not understand. Does see , but do not really want to understand , not understand.