1. The saddest sentence is - we can never go back! We can't have another childhood; we can't have another junior high school; we can't have another first love; we can't have another first love. There may be the joy, happiness, sadness, and pain of the past again. Yesterday, one second ago, it was impossible to go back. Life turns out to be an out-of-print movie that cannot be played back

2. Only by missing you can I know how precious you are; only by parting can I understand the loss in my heart; only by recalling can I understand your true feelings; only by being nostalgic can I long to be with you. Only through reunion and blessing can I express my wish for you: I wish you happiness forever.

3. Birth, aging, illness and death are objective laws of all living things, and no one can reverse them. However, theory has proved that living without restraint and being narrow-minded will shorten your life, and vice versa will lead to a healthy and shortened life. The shortcomings of life are the "six hearts", which are: filial piety to younger generations, love to future generations, sincerity to friends, patience to spouses, and forgiveness to oneself.