Appreciation: What emotions are involved in the love in Wuxi in spring?

This is a poem when I feel hurt in spring. It is quite different from the author's other works, which simply praise the pastoral joy, and it implicitly reveals the worry of losing the country.

He lamented that the years had passed too quickly, and he felt an indescribable sense of stagnation in his heart. What is this "love affair"? On the surface, it seems to hurt spring, but from the perspective of the whole poem, it implies the hidden pain when worrying about and hurting the country. The prosperous spring has passed, and the national luck of Dasong is gone forever like a beautiful spring! So this "love affair" is not only hurting the spring, but also worrying about the country. She is integrated, vague and difficult to express, which makes the poet feel depressed.