In Yuan Hongdao's view of the fifth diary, "the waterfall flows between the blue walls, shaking the mountains and falling into the valley." What does this mean?

Watch the fifth episode (1)

Turn right from Shanmen ②, and you can reach Shiban Road. Hearing thunder and palpitations step by step. The monk said, "This waterfall is also noisy." Run wild, cross rocks and watch waterfalls. Azurite should be peeled (3), not peeled (4), and should be upright on three sides (5). Between the blue walls of the waterfall, the mountains and valleys fall and the snow pours down. The angry stone head was violently excited like a rainbow, suddenly rolled and folded, and then injected. The bigger the water state, the more beautiful the mountains. Tourists sit on the rocks and look down, their faces are covered with foam. At first glance, if you put on silk, it's all in vain. You will fly to get wet and fall off the cliff, but you still can't bear to go. Come back at dusk and write a poem each. Strange eyes, changing thoughts, trance. I don't know what to say. It's noon at night, and the tiger sounds like it's in several beds. If you look at each other carefully, you will find that your eyebrows and hair are both upright and ghosts. (Selected from the Complete Works of Yuan Zhonglang by Ming Yuan Hongdao)

[Notes] ① Fifth discharge: the fifth waterfall. In Zhuji, Zhejiang, there are five waterfalls here. The locals call these waterfalls "Xie", so this mountain is also called Mountain. 2 mountain gate: temple gate; Refers to the gate of Wuxie Temple. 8 green cut: the color is green and steep as a knife. 4-inch skin: in ancient times, the length was calculated, one finger was called inch width, and the width of four fingers together was called skin. It is described here that there are many rocks with extremely narrow intervals. ⑤ cymbals (fú): the outer wall of the ancient city. ⑥ Nushi's transverse excitation: the abrupt rocky mountain blocks the waterfall and stirs up the splash. ⑦ Snap: Turn. ⑧(qο): Reclining. Pet-name ruby weft: the horizontal line of knitted fabric. ⑩ Ghosts: Metaphors are all kinds of grotesque images. Ghosts and monsters are the bull and tiger in hell mentioned in Buddhist scriptures, and the snake god refers to the snake essence. ⑾ (xiāo): Ghosts in the mountains. ⑿ Observation: Observe carefully.

Classical Chinese knowledge

Say "put it down". "Didi" means "Didi" in modern Chinese, such as "dropping a pen". The word "falling" in "shaking the mountain and falling into the valley" above means "shaking" and "swinging", which means that the waterfall runs down and makes the mountains and deep valleys vibrate. "Hanging arm" means swinging arm; The idiom "the tail is too big to fall off" means that the tail is too big to swing, which means that the organization is huge or there are too many people, and the command is ineffective; "Stick out your tongue" means to gossip. Judging from this word, many words have very different meanings in ancient and modern times. When understanding ancient Chinese, don't rashly use the meaning of modern Chinese to explain classical Chinese vocabulary.