If fate is predetermined from birth, then does our desperate effort have any meaning?

Actually, fate is more like a range, not a fixed deadline. Birth, family background, and talent are constants, but what you become within this range is something you can choose.

Effort may not be able to defy the heavens and change destiny, but it can help you stand taller, have more options, and be more stable internally. It gives you dignity, confidence, the ability to protect your family, and also allows you to look back with fewer regrets.

Destiny is the cards dealt by heaven, luck is the momentum gained over time, and effort is the confidence you have to play your hand beautifully. Even if the outcome cannot be fully controlled, living sincerely and striving with all your might are in themselves the greatest value.