彩虹 HSK 6 cǎihóng to purchase; to buy in bulk; procurement Examples 看到彩虹 kàn dào cǎihóng See a rainbow 雨后的彩虹 yǔ hòu de cǎihóng Rainbow after rain 彩虹的颜色 cǎihóng de yánsè Colors of the rainbow