"The sun and the moon are long in the mountains" comes from "Sitting at Night" by Qian Shi, a poet of the Song Dynasty.
Original text:
Although the sun and moon are long in the mountains, why do you dream of Baiyun Township?
The pond is dripping with plum blossom rain at night, and the ink sitting in the city is fragrant.
Translation:
I just feel that the time spent living in the mountains has passed very long, and I also dream of returning to my hometown with white clouds floating in the air.
It started to rain lightly at night, making a ticking sound in the pond. It sat there silently, as if it had a city to itself, and the fragrance of plum blossoms wafted from the distance.
Extended information:
Poems with similar artistic conception:
1. A man with a coir raincoat in a boat, fishing alone in the snow in the cold river. ——Liu Zongyuan's "Snow on the River"
Translated as: A lone boat on the river, a fisherman wearing a raincoat and a hat, fishing alone, not afraid of ice and snow.
2. There are several plum trees in the corner, and Ling Han blooms alone. ——Wang Anshi's "Plum Blossoms"
Translated as: There are a few plum blossoms in the corner, blooming alone in the severe cold.
3. Raise your glass to the bright moon and make three people in the shadow. ——Li Bai's "Four Poems for Drinking Alone under the Moon·Part 1"
Translated as: Raising a glass to invite the bright moon, the shadows facing the moon turned into three people.
4. Go out the front door alone and look at the wild fields. The moon is bright and the buckwheat flowers are like snow. ——Bai Juyi's "Village Night"
Translated as: I came to the front door alone and looked out at the fields. I saw the bright moonlight shining on the endless buckwheat fields, and the buckwheat flowers all over the ground were like a dazzling white snow.
Baidu Encyclopedia-Yizhai Night Sitting