What does it mean to shed tears to Jiang Nanyu?

Shallow translation:

I thought I wouldn't have the same lofty aspirations as in the past, and I would let the flowers bloom when I saw them.

The original text is:

Is there any pride like the old flowers blooming and falling?

When do you cry for Jiang Nanyu and Simin?

About the author:

Lu Xun (1881.9.25 ~1936.10.19), a native of Shaoxing, Zhejiang Province, was originally named Zhou Shuren, and later renamed Yucai. He often wears a simple Chinese robe, his hair stands upright like a brush, and his thick beard forms the word "one" in an official script. Chairman Mao commented that he was a great proletarian writer, thinker and revolutionary, and the main commander of China's cultural revolution. Also known as "soul of china" by the people.