Look, we should learn from the past now, and we can't do anything without the past. From "Augmented Xianwen".

The original intention of this sentence is: observe today's events and learn from the past history. Without the past, there would be no today. This "sage article" inspires us that only by learning from historical experience and mastering the law of development of things can we seize the opportunity, do a good job and enrich our lives.