Because of the clever use of the words "empty" and "self" in the poem, the meaning of this couplet is richer: "self" and "empty" are intertextual, depicting a quiet environment. "Scenes have feelings, feelings have scenery". Green grass is like spring, and orioles sing well. Using only one word "zi" and "empty", the image of sadness, infinite feelings and solemnity is different from being desolate and scattered. The two dictionaries "ego" and "emptiness" reflect the gloomy brushwork of Du Fu's poems. Although the green grass is still reflected and the oriole is still crying, the poet thinks that Zhuge Wuhou, who conforms to all these vitality, has long since ceased to exist, and he can feel gloomy and infinitely sad! Things are different, people care about the future, and people in the temple miss it. No matter how beautiful the grass is, it is just indifferent to the season and has no expectation. No matter how well the oriole calls, it also loses the harmony and comfort it deserves! Therefore, the poet has a deep feeling of "self" and "emptiness", which embodies the poet's feelings of thinking about things and people and worshiping sages.