Long ago, the Pyu people lived in cities. 

Long ago, the Pyu people lived in big cities. 
The Pyu people were good at farming. They used water to help their rice grow. 
They learned new ways to write and talk. They also learned about new beliefs.
Later, new groups of people moved in. The Pyu ways helped these new people.
Many of their old cities are still famous today.
Long ago, the Pyu people lived in many city-states. 
One big city was named Halin. 

Later, raids from the Nanzhao Kingdom made the Pyu cities weak. Over time, the Bamar people moved into the area. The Pyu people slowly joined the new Bamar group. Even so, the Pyu left many things behind. Their writing and calendars helped shape the culture of Myanmar. Today, some of their old cities are famous World Heritage Sites.
The Pyu city-states were a group of important settlements in present-day Upper Myanmar. 

Life in these city-states relied on clever ways to manage water. 

History shows that the Pyu people moved to this region from the north. They likely traveled from near Qinghai Lake toward the Irrawaddy River Valley. 

Archaeologists have found many amazing things from the Pyu era.
The Pyu civilization began to change in the 9th century. 

The Pyu city-states were a group of organized urban settlements located in present-day Upper Myanmar. 
Pyu urbanism was defined by sophisticated water management and defensive architecture. Many cities featured large walled spaces to protect the inhabitants. These walls often incorporated water tanks, either sealed within the structure or placed just outside. The Pyu were experts at irrigation, which allowed them to control water in different local environments. They built these systems to support large-scale rice farming in fertile regions. This agricultural success was vital for sustaining their growing populations in the river valleys. 
The Pyu realm was organized into several distinct types of settlements. Archaeologists have identified 12 walled cities, including five major urban centers. These major cities were Beikthano, Maingmaw, Binnaka, Halin, and Sri Ksetra. Smaller, non-fortified towns and settlements were also spread throughout the region. The city-states were primarily located in three irrigated zones: the Mu River Valley, the Kyaukse plains, and the Minbu region. This geography allowed them to thrive near the confluence of the Irrawaddy and Chindwin Rivers.
History suggests the Pyu people migrated from the north to settle in these valleys. They likely moved from the area around Qinghai Lake toward the Irrawaddy River. 
Different cities served different roles at different times in history. Halin, founded in the 1st century AD, was the most important city for several centuries. However, it was eventually superseded by Sri Ksetra during the 7th or 8th century. Sri Ksetra was located near modern Pyay and was twice as large as Halin. It became the most influential Pyu center in the realm. 
The decline of the Pyu city-states was driven by external conflict and gradual migration. In the 9th century, the Nanzhao Kingdom from the north began repeated raids on the region. These invasions significantly weakened the Pyu states. For example, in 832 CE, Nanzhao warriors overran the Pyu country and took 3,000 prisoners from Halin. 
Despite their political decline, the Pyu left a permanent mark on Southeast Asian culture. They were the first in the region to adapt Brahmic scripts to record their tonal language. This led to the invention of unique tonal markers. Their Pyu script may have been the ancestor of the modern Burmese script.
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