Read the following song, then answer this question. The title of Zhang Xianshui's culvert in Xixi Wuxiangyuan is empty, and the number of doors is average. Duckweed breaks through the cocoon and sees the mountain.
(1) Duckweed Broken Mountain Shadow is a mountain shadow written in the Ming Dynasty; "Walking across the bridge like learning" means writing "shadow" in secret, and the stream reflects the figure; "Don't let the reeds grow, it will hinder the birth of the moon" is a hidden word "shadow", for fear that the reeds will grow taller, which will affect watching the shadow of the moon in the stream.
(2) The previous sentence focuses on vision, and it says that duckweed is broken and mountain shadows appear in the water, which echoes the word "Qing" in the first couplet. The next sentence is about hearing. When the ship returns, insects can be heard in the grass, and the quiet environment is set off by the subtle sound of grass, which echoes the word "quiet" in the first couplet. (reasonable)