This Way Can Lead to Eternal Life: Calamity and Destruction

What is immortality? Why immortality? Almost all works cannot clearly explain this point, because it involves philosophical issues. The meaning of life is not the length, but whether you can understand the state in which you should spend your life even in a complete adversity. No matter where I go after death, I think I will never regret what I have done in this life. This is already a kind of immortality, and this is my way. A person's only obligation is to make himself happy.