What should be written in the calligraphy works hanging in the classroom?

One day, I will ride the wind and waves, raise the Yun Fan and cross the sea.

The edge of the sword comes from sharpening, and the fragrance of plum blossoms comes from bitter cold.

If you don't fly, you will fly to heaven; If you don't sing, it will be a blockbuster.

The sea is wide and the fish jumps, and the sky is high and birds fly.

Time flies, the sun and the moon fly like a shuttle.

Don't be idle, white and sad!

Perseverance, the stone can be carved.

The efforts of youth are a good thing for a lifetime. For the fleeting time, don't relax your efforts at all.

Learn and then know less.

Diligence is good at diligence, poverty is good at playing, success is good at thinking, and destruction is good at following.