In 221 BC, the army commanded by King Ben of Qin suddenly attacked Qi from the south of Yan to the north, heading straight to Linzi, the capital of Qi.
The morale of the Qi army was not high, and it was caught off guard when the Qin army suddenly attacked from the north, and quickly collapsed.
The Qin army captured Linzi in one fell swoop, captured King Jian of Qi, and destroyed Qi.
Qin destroyed the six kingdoms and unified the world.