Long ago, many small lands lived in China. 

Long ago, China was made of many small lands. 
One land was named Qin. It grew very strong. The leader of Qin was Ying Zheng.
He had a big plan. He wanted to join all the lands together. He took the lands one by one. 
First he took Han. Then he took Zhao. He also took many other lands.
Soon, all the lands were one. Ying Zheng became the first emperor. He started the Qin dynasty. 
Long ago, China was split into many small states. They fought each other for a long time. This was called the Warring States period. 
One state was named Qin. It became very strong through new rules. The King of Qin was Ying Zheng. He had a plan to join all the lands. He wanted to take the other six states one by one. 
In 230 BC, Qin attacked the state of Han. Han was the weakest state. Qin won and took its land. Next, Qin fought the state of Zhao. Zhao had a great general named Li Mu. He won many battles against Qin. But Zhao also had a bad drought and an earthquake. Qin used this to win.
Qin then took Wei and Chu. They also took Yan. In 221 BC, the state of Qi surrendered. Now all the lands were one. Ying Zheng became the first emperor. He started the Qin dynasty. 
This new rule changed how China worked. It moved away from old ways of ruling. The empire became a single, large group.
Long ago, China was not one single country. It was divided into many smaller lands called states. During a time known as the Warring States period, these states often fought for power. 

Ying Zheng had a clever plan to win. He used a strategy of making friends with far-away states. At the same time, he attacked states that were close to him. This helped him take over the other six states one by one. His first target was the state of Han in 230 BC. Han was the weakest of the states. The Qin army crossed the Yellow River and took the capital city of Zheng. This was the first step in his long journey to rule everything.
Next, the Qin fought a very long struggle against the state of Zhao. Zhao had a famous general named Li Mu who was great at defending his land. He even won several battles against the Qin armies. However, Zhao faced two hard problems: a big earthquake and a drought that caused a famine. In 229 BC, Qin took advantage of these troubles to attack the capital, Handan. Qin also used spies to trick the King of Zhao. The spies made the king believe his own general was a traitor. Because of this, Li Mu was removed, and Zhao fell to Qin in 228 BC.
The wars continued against the other states. In 225 BC, the general Wang Ben led 600,000 soldiers to conquer the state of Wei. He captured their capital, Daliang, which sat near important rivers and canals. After that, Qin moved against the state of Chu. By 222 BC, the state of Yan was also conquered after a failed attempt to stop Ying Zheng. Finally, in 221 BC, the state of Qi surrendered. This meant that all the major fighting had ended and the land was finally joined together.
When the wars were over, Ying Zheng became the First Emperor. He was known as Shi Huangdi. He started a new era called the Qin dynasty. This changed how China was run by creating a more central government. This was different from the old ways used by the Zhou dynasty. The empire became a single, organized place. Many famous things from this time, like the Terracotta statues, remind us of this powerful era. 
The Qin wars of unification were a series of military campaigns in the late 3rd century BC. These wars were launched by the state of Qin against six other states. These states were Han, Zhao, Yan, Wei, Chu, and Qi. 

Qin used specific diplomatic and military strategies to grow its power. One common method used by the other states was the "vertical alliance." In this system, states joined together to fight against Qin. Qin countered this with "horizontal alliances." These were agreements that pitted the common enemies of Qin against each other. 
In 238 BC, Ying Zheng took power in Qin. He worked with advisors like Li Si and Wei Liao to execute his plan. His first major target was the state of Han in 230 BC. Han was considered the weakest of the Seven Warring States. The Qin army, led by Neishi Teng, crossed the Yellow River. They captured the Han capital, Zheng, within one year. After Han surrendered, Qin reorganized the land into the Yingchuan Commandery. This was the first step in the total unification of the region.
The conquest of Zhao was a much longer and more difficult struggle. Qin and Zhao had fought many wars for decades. A major battle occurred at Changping in 260 BC, which severely weakened Zhao. Later, the Zhao general Li Mu defended his land successfully. He defeated Qin forces at Fei and Yi'an in 233 BCE. However, Zhao suffered from an earthquake and a severe famine. 
Following the fall of Zhao, Qin moved against the remaining states. In 225 BC, General Wang Ben led 600,000 troops to attack Wei. He besieged the capital, Daliang, which was located near the Sui and Ying rivers. After Wei, Qin turned its attention to the state of Chu. In 228 BC, the state of Yan also faced invasion. An official named Ju Wu tried to suggest an alliance to stop Qin. A prince from Yan even sent an assassin named Jing Ke to kill Ying Zheng. The assassination attempt failed, and Qin used it as a reason to attack Yan.
The final stages of the wars occurred between 222 and 221 BC. Qin forces conquered the state of Yan and the state of Dai. They also moved against the state of Wuyue. Finally, in 221 BC, the state of Qi surrendered to Qin. This marked the end of the Warring States period. The entire region was now under the control of a single power. 
The unification led to the rise of the Qin dynasty. Ying Zheng declared himself the First Emperor, or Shi Huangdi. He replaced the old fengjian system of the Zhou dynasty. The fengjian system was a way of governing through local lords. Instead, Shi Huangdi created a more centralized form of government. This meant the central empire held more direct control over the land. This new system helped organize the vast territories into commanderies. 
The impact of the Qin unification was massive and lasting. It turned many separate states into one unified empire. This era produced incredible works, such as the Terracotta statues. These statues serve as a reminder of the power of the Qin dynasty. The transition from the Zhou to the Qin represented a total shift in how people lived together. It moved China from a collection of warring lands to a single, organized state.
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