What kind of feelings did Lu Xun express to Ah Chang in "Flowers in the Morning"?

Lu Xun expressed his admiration for Ah Chang in "Flowers in the Morning". Because in Lu Xun's childhood, Chang was a long-term worker in their family. Although he is a long-term worker, he is not as knowledgeable as a scholar. But Chang taught Lu Xun a lot, telling him stories and being reasonable. ...