It originates from Tongbo Mountain, at the conjunintersection of Hubei, Henan, and Anhui Province.

If you mean Tongbo Mountain is on the borders between these three provinces, then 'intersection' or 'meeting point' is more commonly used.

On both sides of the Huaihe River in the western part of Anhui province are two prefecture-level cities, one on the south is Lu'an City, another on the north is Fuyang City.

In the western part of Anhui province, each side of the Huaihe River has a prefecture-level city: on the south, Lu'an City; on the north, Fuyang City.

(Your sentence isn't wrong, this is just more natural for written English)

Four 4-a scenic spots: You-fFamily Park, Digou, Mingqing Garden and Wulihe Wetland Park.

The riverbanks of them are planted with trees, grass and flowers.

We don't usually say 'banks of rivers/them'

The Huaihe River is in the central-eastern part of eastern China.

It’s usually called the Huai River in English, or simply the Huai (spelled “Hwai” in older books).

“Central-eastern” isn’t idiomatic in English.

It originates from Tongbo Mountain, (at) the conjunction of Hubei, Henan, and Anhui Pprovinces.

Instead of “originates” you could say it “rises from Tongbo Mountain” or “its headwaters are on Tongbo Mountain.”

It flows into the HuangYellow Sea and Dongthe East China Sea on the eastern coast of China.

The middle of the Huaihe River basin is Anhui pProvince.

suggestion:
Anhui Province occupies the middle of the Huai River basin.

On both sidesopposite sides (or: banks) of the Huaihe River in the western part of Anhui pProvince are two prefecture-level cities, one o. On the south is Lu'an City, anotherd on the north is Fuyang City.

“On both sides” could mean that both cities straddle the river (both cities are on both banks) or that there a four cities, two on each side of the river.

more natural: “…are two prefecture-level cities, Lu'an on the south and Fuyang on the north.” (It’s not necessary to add “City” after each city’s name.)

It originates from Tongbo Mountain, the conjunction (the junction ? Meeting point ? ) of Hubei, Henan, and Anhui Province.s.

It flows into the Huang Sea and Dong Seas on the eastern coast of China.

The middle of the Huaihe River basin is border ( or start of the ) Anhui province.

On both sides of the Huaihe River in the western part of Anhui province are two prefecture-level cities, the one on the south is Lu'an City, and the other on the north is Fuyang City.

Yingshang is considered the county that has the most scenic spotareas and the best ecosystem in Fuyang.

It has a 5-a scenic spot:s : the first being Balihe.

FouThe other 4-a scenic spots: are You-family Park, Digou, Mingqing Garden and Wulihe Wetland Park.

I hope I understood this correctly.

The vegetation there is luxuriant and everywhere.ll over.

All the streets in the county seat are broadwide and straight.

Along both sides of the streets, there are tall trees, lush bushes and flowers.

The banks of themriver banks are planted with trees, grass and flowers.

People live and work in theis "garden".