What does "a promising future" mean?

The original sentence is: The fleeting time is full of laughter and the future can be expected

It means: We must face the passing time with a calm and peaceful attitude, and be prepared for the upcoming future. Have unlimited longing and expectations. Don’t stick to the past and embrace the future.

"The future is promising" is also often used to praise a person, praising him for doing well now and saying that he will have greater development prospects in the future, which should not be underestimated.

Extended information:

The future is the time from now, and it is the future time relative to the moment we are in now. It is a moment, or it can is a period of time. Relatively speaking, tomorrow is only part of the future, as is the next second. It is a concept of time, relative to the past and present. Everything has a future.

Thinking and creating about the future brings extraordinary meaning to our lives. There is a specialized discipline called futurology. It is a concept of time, relative to the past and present. Everything has a future. The universe, planet, country, human beings, creatures...

Thinking and creating about the future brings extraordinary meaning to our lives. There is a specialized discipline called futurology. Some people think about the future as follows: What will the future hold? No one has an accurate answer, not even the most authoritative scientists now. But as can be seen from the documentary "Future Earth", the future Earth will become nothing. In other words, it will return to where it came from, and the Earth will become dust in the universe.

What we have to do is not to think about what the future will be like. What we have to do is how to protect our environment so that our descendants will not be in panic for their survival. After all, it is not easy to immigrate to other planets. It can be completed in ten years, and I think that’s the point.

Baidu Encyclopedia: The Future