Princess Huanzhu is an idiom. Metaphor is to get it back, go and come back.
"The Biography of Meng Taste in the Later Han Dynasty" said: "(Meng) tried to move to Hepu Taishou, and the county did not produce grains, but the pearls were produced in the sea. At first, the slaughter was greedy and deceptive, but they didn't know the discipline, so Zhu Sui moved to Jiao Jiao County. The story of "pearls returned to Hepu" in the Book of the Later Han Dynasty can be known from historical materials: before Meng Chang was appointed as the magistrate of Hepu, the collection of pearls in Hepu was quite developed. Due to the insatiable greed of officials and excessive excavation, the natural resources of pearls were destroyed, leading to the extinction of pearl seedlings, which is the legendary "Pearl moved to Jiaotoe County". After Meng Chang took office, he saw that the pearl resources in Hepu were seriously damaged, and pearl people fled their homes one after another. Meng Chang took effective measures to protect and proliferate Hepu pearl resources and develop Hepu Nanzhu. At that time, it was widely circulated among the masses that "returning pearls to the pearl", that is, the origin of "returning pearls to Hepu".
If you want to translate, my literary talent is not good. "Return the Pearl to Hepu" and "Return the Pearl to Hepu"