According to the records of historical books and literati, there is a beautiful lake embedded in the mountains in the south of Qingzhou. Her name in history books is "ground mirror", which is popularly called ground mirror lake. In the Northern and Southern Dynasties, according to the Book of the Song Dynasty and the Five Emperors, it was recorded that in winter (the 25th year of Yuanjia), Qingzhou was seen from the south of the city, which was called the "ground mirror". The 25th year of Yuanjia here is 448 AD, which has been 1500 years. At that time, under the rule of Harmony, Liu Song regime enjoyed a peaceful country and a peaceful government, which was called "the rule of Yuanjia" in history. This beautiful scenery in the south of Qingzhou is considered a godsend, and this phenomenon has also been written into the history books. Qingzhou City here refers to Dongyang City established after Song Wendi's father Song Wudi destroyed Murong Nanyan State in 4 10 AD. It is located on the north bank of Nanyang River. Looking south from the south gate of Dongyang City, the ground is like water, and three mountains, Pishan, Tuoshan and Yunmen, are reflected in it, with beautiful scenery. The formation of the ground mirror is explained by the optical principle of modern physics, which is probably specular reflection, just like we see a piece of clear water in the distance on the road in midsummer. Perhaps there was no water in the "ground mirror" at that time and it could not be called a lake, so it was very strange. Later, the word "ground mirror" also became a symbol of auspicious treasure mirror. In the Northern Zhou Dynasty, the fifth part of Yu Xin's "Zhengdiaoqu" wrote: "The ground mirror is far from the base, and the sky reaches the shadow." The etymology of the ground mirror quoted here is probably the strange phenomenon in Qingzhou. When Han Yu and Meng Jiao wrote poems in the Tang Dynasty, they wrote: "The ground mirror is faint, and the pool star shines." Volume 8 of Beginners quotes Gu's explanation of the ground mirror in the Southern Dynasties: "In the south of Qingzhou, the reflection is far like water, which is called the ground mirror". It can be seen that the word "ground mirror" is special as a place name, which refers to the place south of Qingzhou. No matter the light reflection caused by the ground or the lake formed later, it is unique. Beautiful light reflection phenomenon can only be formed when various conditions coincide. How can we keep the Taoist scenery? Yes, only if there is really water can the three mountains be reflected in it. Later, water really formed in Qingzhou. Looking at Fucai Gate at the south gate of Nanyang, Qingzhou, a mirror reflects the mountains, the water is dense, and the clouds cover the fog, just like the legendary Penglai fairyland. People used her original name "ground mirror", and the ground mirror has formed a lake at this time. It became an indispensable beautiful scenery in Qingzhou during the Tang, Song, Yuan and Ming Dynasties, and was called "the ground mirror was upside down". Imagine that when the sky is clear in Wan Li, the lake is like a mirror, and Yunmen Mountain is reflected in it. The mirage is indistinguishable from the figure on the balcony, just like the mirage in Penglai. Why not be intoxicated by her? Among the existing poems, Chen Jing of Haidai Poetry Society in Ming Dynasty and Li Benwei, the magistrate of Qingzhou in Ming Dynasty, directly described the scenery of "hanging upside down". Chen Jing wrote: "The green grass is even a lonely city, while the mirror is long, looking into the distance." Clair against Lingshan is rich, and nothingness is reflected in the distance. The sparse forest is full of love, and the wild horses are born. Seeing that the earth is not connected with the spirit, I asked Junping for news and wrote a fairyland scene.

However, Li Benwei's poem "The Mirror of the Earth Upside Down" is not inferior. He wrote: "When you look at the horizon, you will see the reflection of the sky. Luan dances by herself, and Qiongge steams. The song is being practiced, and the Qin Palace shines on the ice. In fact, the axis of the earth is clear, and it is not awkward. "

Zhao, the top scholar in the Ming Dynasty, wrote a poem "Dongguo Mountain Villa" after his retirement, which described the beautiful scenery of Dijing Lake and wrote: I have lived in the hills and valleys for many years. The clouds are connected to the north overseas, and the trees are around the South Mountain Mirror. Banana dream failed to forget mu, and the wood lay like a worm. After the early harvest of the thatched cottage, I read all the articles about autumn water in the south.

In this way, Dijing Lake embodies the mountains of Qingzhou and carries the culture of Qingzhou. It is as calm as a mirror, illuminating ancient city of qingzhou, staying in Qingzhou people's hearts and becoming the most beautiful lake in legend. Later, perhaps because of drought, perhaps because of the change of river course, the Dijing Lake slowly disappeared into people's sight and became a small low-lying plain between Nanyang City and the mountains in the south. Hard-working Qingzhou people are farming here. Green wheat fields, vineyards, peach trees, apricot trees, pear trees and hawthorn trees are everywhere. bloom is covered with brocade, just like phoenix trees, willow trees and Sophora japonica in the village. Later, due to the nearby villagers digging holes and burning bricks, the northern part of the lake bed became a deep ditch, which was called laterite ditch. There is still water in the rainy season, which has become a quagmire. The children nearby are playing here, and the Dijing Lake is deeply imprinted in the hearts of the children in another way. In recent years, the Qingzhou municipal government has rebuilt the nearby tourist attractions, adapted to local conditions, opened the apple orchard in the south and the red soil ditch in the north of the former Jinghu Lake Basin into new lakes, and transferred water from the Heihushan Reservoir in the distance, thus realizing the connection between this place and Nanyang Lake and other water systems. The newly-built lake is called "longtan lake", and it is still very beautiful when it is green nearby. She is located in Yunmen Mountain Scenic Area, Qingzhou City, the ancient city of Shandong Province, at the foot of the scenic Phoenix Mountain. Because a deep pit has been dug in the northern part of the lake basin, it is impossible to restore the original scenery of Jinghu Lake. So the new lake is divided into two lakes with a drop of more than ten meters. The water from the upper lake flows into the lower lake to form a beautiful and spectacular waterfall, and the silver is wrapped in white and falls into the waterfall, and the waves are like splashing. The most attractive thing about longtan lake is the reflection. Her lake is clear, reflecting Cloud Gate and Phoenix Mountain, presenting a unique beauty of landscape. The attraction of the lake lies in the waterfalls, surrounded by weeping willows and picturesque scenery. The flowers, trees, pink and willow colors by the lake show us the rebirth of Dijing Lake. Dongyi Cultural Square was built next to Jinghu Lake, which gathered many tourists. Let's enjoy this thousand-year-old landscape again-the upside-down ground mirror.