Polyperchon vs Shan Chongguo

Upon Antipater's death, Polyperchon was appointed regent of the Macedonian Empire, bypassing Antipater's son Cassander. This appointment triggered a power struggle with Cassander, who refused to accept Polyperchon's authority.

Polyperchon issued a decree proclaiming the freedom of Greek cities and restoring democratic governments, aiming to gain support against Cassander. This propaganda move won him temporary backing from many Greek states but failed to secure lasting loyalty.

Polyperchon besieged the city of Megalopolis, which had sided with Cassander. The siege failed when the defenders repelled his assault, severely damaging Polyperchon's reputation and military credibility.

Polyperchon allied with Olympias, Alexander the Great's mother, to support her claim to the Macedonian throne. This alliance led to the execution of Philip III Arrhidaeus and Eurydice, but also provoked Cassander's invasion of Macedonia.

Polyperchon was defeated by Cassander in a series of campaigns in Greece and Macedonia. He lost control of Macedonia and was forced into exile in the Peloponnese, where he held out with a small force until his death.

Zhao Chongguo led a Han army against the Qiang tribes in the Hexi region. Using the tuntian system to supply his troops, he defeated the Qiang and secured the Han frontier, demonstrating the effectiveness of his agricultural colony strategy.

Zhao Chongguo proposed establishing military agricultural colonies (tuntian) in the Hexi Corridor to supply Han forces fighting the Qiang tribes. This system allowed soldiers to farm during peacetime, reducing the cost of long-distance supply lines.

Zhao Chongguo submitted a detailed memorial to Emperor Xuan advocating for the permanent establishment of tuntian colonies. The emperor approved the plan, leading to the long-term settlement of Han soldiers in the frontier regions.