Walking with head down means that people should be modest, bury their heads in things and take everything seriously. Looking up at the sky means that one should not be complacent about the status quo, see a bright future, see the hope of the future, and look further. Every moment of life, we will face a dilemma and need to make a choice. Often there are two or more roads in front of us, jumping out of our comfort zone and exploring our potential in a broader stage area, so we can't be satisfied with the status quo. Work hard, accumulate life experience, improve yourself better, lay a more solid foundation for future development and achieve yourself better. People must learn to look up at the sky while keeping their feet on the ground, see clearly human nature and understand people's hearts, so as to be invincible in society.