Zheng Banqiao especially likes to paint blue bamboo stones, because what qualities do they symbolize?

It symbolizes noble and tenacious quality. Blue symbolizes a gentleman, bamboo represents tenacity, and stone represents perseverance! Don't thank at four o'clock, forever, and never change. Plum blossom is famous for its delicacy, which symbolizes seclusion and indifference, loyalty and self-control. The temperament of "outstanding with high standards" and the charming and extraordinary image make the poet have infinite admiration and passionate imagination, and bamboo is green and magnificent in the fierce wind and frost.