Source: Chairman Mao Zedong, Shui Tiao Ge Tou·Going back to Jinggangshan, May 1965

After a long time of ambition, I went back to Jinggangshan. After traveling thousands of miles to find the old place, the old appearance has changed into a new one. There are singing and dancing birds everywhere, gurgling water, and the high road reaches the clouds. After crossing Huangyangjie, there is no need to look at dangerous places.

The wind and thunder are shaking, the flags are flying, it is the world. Thirty-eight years have passed in a blink of an eye. You can go up to the nine heavens to catch the moon, you can go down to the five oceans to catch turtles, and you can talk and laugh and return in triumph. Nothing is difficult in the world, as long as you are willing to climb.

This should be considered, but the famous saying here should be "Nothing is difficult in the world, as long as you are willing to climb." But I'm not sure if it's a famous quote, but I still hope that the poster will adopt it.