Huanhuaxi comes from Du Fu's thatched cottage poem. The whole drama "The branches of Haitang are full of spring" is listened by the elderly along Huanhuaxi.
In spring, the branches of begonia are noisy. Old friends on the banks of Huanhua River smell the branches of begonia trees blooming. I hope my friends on the banks of Huanhua River can smell them, too. This was written by Du Fu, a poet in the Tang Dynasty, and expressed his yearning for his old friend.