There is a ferry in the river of life. Even if you have sailed far away from it, you still want to return to this ferry to dock and visit its scenery and smell. This ferry is called Youth.
"Look, because of the centripetal force, the curved motion will be maintained along the circumference. Draw a tangent line here to represent acceleration..."
"Centripetal force?"
"Yes, centripetal force always points to the center of the circle."
"Actually, centripetal force is not necessarily a single arrow."
Here is the story of Lin Xu and Xiang Xin (two-way secret love). It is a story of growing into better people together and gaining dreams, friendship and love.
I hope that every friend who reads this article can be like Lin Xu and Xiang Xin, who will always have a youthful spirit and have a lifetime of glorious years.