The reason why Jiang Nanchun's last two sentences satirize the present with the ancient.

The last two sentences of "Jiangnan Spring", "Four hundred and eighty halls in southern dynasties, many towers in misty rain", are used to satirize the present, for the following reasons:

Although this sentence is about scenery, it is full of the poet's understanding of historical changes. The rulers of the Southern Dynasties wasted human and financial resources and built Buddhist temples. But with the passage of time, the dynasty has long since disappeared, and the Buddhist temple can only be used as a historical relic and become a corner of the scenery in the south of the Yangtze River. This sentence also implies the meaning of satirizing the present by borrowing from the past, satirizing the current situation of Buddhism and Taoism, making the connotation of the poem richer and thought-provoking.