Uncle Lei Feng, where are you? Who does he refer to in the poem?

"Uncle Lei Feng, Where Are You" is a children's poem. This lesson praises Comrade Lei Feng's deeds in the form of poetry. Although Comrade Lei Feng has left us, there are still countless people around us. Lei Feng appears. With beautiful language and smooth phonology, the author searches for Lei Feng's footprints along the "long stream" and "winding path" and calls on us to learn from Comrade Lei Feng.