Lie down and walk along the water with a bamboo stick.
Lie down and look at the thousands of mountains on both sides.
It is suspected that the green mountains are going backwards,
It turns out that the bamboo boat is following the current.
I raised my head and looked up at the sky.
The sky was high and the moonlight shone on my face.
Suddenly the moon shyly hid in the clouds.
It turned out that the evening clouds covered the bright moon.
“Sit on the ground and travel eighty thousand miles a day, survey the sky and see a thousand rivers in the distance
Physics teachers used to talk about it a lot, all about relative motion.