合浦珠还
Hé pǔ zhū huán
The Hepu pearls return home
Something or someone returns to its original source. Often said of someone returning to their original home district after years of wandering. The story is from the Han dynasty of Hepu, Gunagxi which was a leading center for pearl fishing until a local official over exploited the beds of pearls leading to Vietnam taking over as the leading procedure. Only when the pearl beds were left for years to recover did the pearl industry return.
Roughly equivalent to: The wheel has come full circle.
