cannot.
Slowly and longly, long and brightly means: there is still a long road ahead, and there will always be bright sunshine.
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The original sentence is: It is difficult to pass the pass, but the road ahead is long and bright. It roughly means that we will encounter many difficulties. When we solve the difficulties and pass each difficulty, we must believe that there will be light ahead.
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Slowly means that time is long and the years are long.
Manman refers to the vast space and the long journey.
Have a great perspective on life.
This is a normal state of life, with no obstacles that are impossible to pass, no need to surrender, and a continuous experience.