What is the metaphor in the drunken book of Wang Hu Building on June 27th?

Clouds poured out and poured down like ink, but a mountain range was exposed on the horizon, bright and fresh, and the splashing water was like white pearl gravel, splashing on the boat.

On June 27th, I read the drunken book in Lake House.

Su Shi in Song Dynasty

Original text:

Clouds poured out and poured down like ink, but a mountain range was exposed on the horizon, bright and fresh, and the splashing water was like white pearl gravel, splashing on the boat.

Suddenly, the wind rolled up and dispersed the clouds in the sky. The lake was blue as a mirror, beautiful and gentle.

Translation:

Dark clouds surged up and rolled like splashing ink, but a mountain was exposed on the horizon. The splash caused by heavy rain splashed on the boat like white beads and gravel. Suddenly, the wind swept in and dispersed the dark clouds all over the sky. The water in the West Lake was as blue as a mirror, bright and gentle.

Literary appreciation:

This poem is about what I saw on the boat. The poet wrote the changes of wind and rain very vividly. He is sitting on a boat. The boat had just rowed downstairs to Wanghu Lake, when suddenly I saw a dark cloud rising in the distance, just like spilling a pot of ink, and half of the sky was suddenly dark. This dark cloud went straight to the lake, and it rained cats and dogs in the blink of an eye.

I saw countless splashes on the lake, and the raindrops were as big as soybeans, hitting the boat one after another, just like God scattered thousands of pearls together, and the top of the boat was full of banging sounds. Someone on board panicked and shouted to go ashore. But when the poet looked into the distance, he knew it was just a passing sight and it was over in a blink of an eye.

The mountains in the distance still reflect the sun, and it doesn't rain at all. In fact, it is. This black cloud, blown with the wind, also goes with the wind. Less than half a cup of tea, after a storm comes a calm. The water reflects the sky, the sky shines on the water, the blue waves are like mirrors, and it is also a gentle and beautiful scenery.