According to the introduction of a dragon, the place where the three Yellow Rivers in the north, middle and south converge is low-lying, the river is criss-crossed, and it is overgrown with red willows, which is called "Uriya Sutaihai" in Mongolian, which is the place where mangroves are overgrown. Pen & Fun & Pavilion www.biquge.info Sun Yi named "Red Willow Bay".

Hongliu Bay was a lake in later generations, called Wuliangsuhai. Wuliangsuhai is a river trace lake formed on the original Beihe River during the Daoguang period of the Qing Dynasty. At first only 2 square kilometers, due to the Yellow River during the Republic of China, the formation of a north-south length of 60 kilometers, east and west width of 25 kilometers of vast waters, from 1977 to 2016, the lake surface maintained at about 290 square kilometers, north to south length of 35 ~ 40 kilometers, east and west width of 5 ~ 10 kilometers, is one of the eight major freshwater lakes in China, known as the "pearl outside the plug". In recent years, the Wuliangsu Sea has been seriously polluted, yellow moss breeds, a large amount of garbage floats on the water, and dead fish can be seen in many places.

To the north of Hongliu Bay, the Beihe River is called "Wolf Mountain Bay" by the people along the waters of Wolf Mountain.

To the east of Langshan Bay and Hongliu Bay, sandwiched between Yangshan Mountain and Yinshan Mountain is a large grassland with a gradual and slow rise of terrain, which was called "Osaka Slope" by the Ming Dynasty and "Ming'an River" by later generations.

In the later Ming Anchuan grassland, there stood two Shetai cities, one large and one small, which were said to be built by She Taijun to resist the Liao soldiers. In the Two Wolf Mountains behind the two Shetai Cities, the Great Wall built by the Zhao State during the Warring States Period is well preserved.

To Sun Yi's great surprise, at the foot of Wolf Mountain, the westernmost part of the Wolf Mountain River, there was actually a large lake at this time.

According to a dragon's statement, this lake is the Yellow River water overflowing the river channel in the low-lying flat place, the lake is very large, but the water is not deep, the lake is mostly dark alkaline land, overgrown with wild grass, wild geese and ducks are flying all over the sky. Due to the inaccessibility of people, there is no Chinese name, and the Mongolian name is Tengri Norr, which means "lake as big as the sky", or "Tianshui".

Sun Yi said excitedly, "This lake has a name!" This lake has a name! This lake has been called Tu Shenze since the time of the Han Dynasty! ”

According to Sun Yi's information, during the Qin and Han dynasties, the Wolf Mountain was lush with forests, and Tushenze was an important frontier grain reclamation area with a radius of 100 miles. In later modern times, the North River was silted up, Tu Shenze disappeared, and the land was seriously desertified. Sun Yi faintly felt that if he took the initiative at this time, maybe Tu Shenze's ecology could be restored to benign.

Tu Shenze also had obvious military uses. It is said that the reason why the Qin and Han armies were able to hold the Hetao against the Xiongnu was that they relied on the vast water surface of Tu Shenze to shorten the defensive surface. There is a dangerous military pass in the west of Tushen Jersey, called Jilu Stop, which is the plug where Zhaojun came out of the plug, and through the Chicken Deer Stop, you will reach the vast Gobi outside the Wolf Mountain.

To the south of Tushenze is an ancient ferry port, which was called Dengkou in later generations and in the Ming Dynasty. The Yellow River flows to the mouth of the river in the north-south direction, because the base of the river trough on the west bank is hard, the water rises and falls, and it leaves a step of the river, so it is called the mouth of the river. Dengkou is the place of soldiers since ancient times, Dengkou can go to Yinchuan Lanzhou to the south of the Yellow River, go to Helan Mountain in the west and go to Qinghai, and go out of the chicken and deer plug can go to Turpan and Wara. Qin, Han, Sui and Tang dynasties, successively built the city here to guard, the Han Dynasty Dengkou is the seat of Shuofang County, under the jurisdiction of ten counties, among them, Huihun, Linrong, three seals are in the territory of Dengkou, there is a historical record that "the police of fireworks are not seen for several generations, the people are blazing, and the cattle and horses are wild".

To the south of the mouth, there is a large sandy beach, the raft guests of the Ming Dynasty called it the golden beach, it is not easy to pass, only the Yellow River is a waterway. According to a dragon, the sand of Golden Beach is one or two feet shallow, and up to three or four feet deep.

In later generations, the golden sand beach was called Ulan Buhe Desert, Ulan is Mongolian "red", Buhe is Mongolian "cow", it sounds like it is brutal and wanton. Ulan Bu and the desert have accumulated 10 meters of sand in later generations, seriously threatening the waterway of the Yellow River.

Ulan Bu and the desert were actually a large lake in ancient times, and the famous Jilantai Salt Pond is a remnant of the ancient Great Lake. The whole desert is high on all sides, low in the middle, and the depression in the middle is lower than the water level of the Yellow River. In later generations, some people continued to suggest that the water of the Yellow River should be injected into the desert to control desertification, but unfortunately in later generations, the water of the Yellow River was as expensive as oil, and the downstream was cut off all the year round.

Sun Yi played sandboarding and desert off-road in Ulan Bu and the desert, and also found a poem describing the local area in the Han Dynasty: "The general travels out, and the pear blossoms fall all over his head."

On the south side of the Langshan River, there was also a desert called the Kubuqi Desert in later generations, which was worse than the situation of Ulan Bu and the desert. A dragon introduced, Kubuqi is the Mongolian word for bowstring. At this time, Kubuqi could not be called a desert, but a slender sand area, like a bowstring, stretched on the bow of the Yellow River, hence the name. The people of the Ming Dynasty called it Shasai, because it was like a side fortress that protected the town of Yansui in the Ming Dynasty.

……

Before I knew it, it was almost noon, and the Ironwood Battalion didn't know when it began to enter the nap time.

The camp was quiet, except for the sound of Sun Yi and several leaders chattering.

The baby lay on the stove and was already asleep.

Sun Yi didn't rest well for two nights in a row, and then he listened to the voices of the leaders began to get farther and farther away, and became more and more blurred, wondering in his heart why there were no mosquitoes in this place in such a hot summer?

In a trance, several people got up and left, and Sun Yi returned to his shack and dug up the hay, and fell asleep with his backpack upside down.

Sun Yi had a dream.

In the dream, he returned to the home of the Han Dynasty, wearing armor, as if in the desert, and as if in the woods, chasing a girl, the girl's long hair was stained with apricot blossoms, when Sun Yiyi pulled the girl into his arms, the girl was actually a milk baby.

……

There are poems:

The Yellow River has nine meanders and winds around the ancient border states.

The geese fly in the early night, and Qianghu is in late autumn.

- (Tang) Lu Lun

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References (not related to the plot, skip for uninterested readers)

Tu Shenze, also known as Hun Ze.

"Notes on the Book of Water" clouds: "The river bends to the north and flows out of the south river." The river overflows to the west and overflows into the east of the ancient city of Hun County,...... Its water accumulates for Tu Shenze, and Ze is one hundred and twenty miles from east to west."

In the plain map of Kangxi's "Imperial Opinion Map", Tu Shenze called "Tengribo", in addition to the Yellow River flooding into the water, there is also a river flowing in from the Wolf Mountain.