Weizi town, Sichuan and Guizhou

Ziwei belongs to Sichuan and Guizhou Ziwei, which is more in line with your description. The flowers are yellow and white, the leaves are consistent, and the flowering period is April.

Lysimachiaceae >> Lagerstroemia speciosa >> Lagerstroemia speciosa, which is produced in Sichuan and Guizhou.