"Songyu" is a Chinese word with two different meanings. According to different contexts, it can be interpreted as: "Songyu" (1) refers to the raindrops of pine trees, also known as "truffles", which is a natural delicacy and is known as "nectar from the sky"; (2) It refers to a traditional poetry genre, also known as "Song Yushi", which is characterized by concise sentence patterns and far-reaching artistic conception, and often uses rhetorical devices such as metaphor and symbol, which has high literary value.

The raindrops of pine trees, also known as "truffles", are a natural delicacy. Truffles are rich in protein, vitamins and various minerals, which are very beneficial to human health. At the same time, truffles are unique and delicious, and are known as "nectar from the sky", which is a delicious food on the table in many countries.

Song Yu's poetry is a traditional poetry genre, which is characterized by concise sentence patterns and far-reaching artistic conception. The number of words in Song Yu's poems is limited to seven words and four sentences, each with four words and two rhymes. Song Yu's poems have a wide range of themes, which can describe natural scenery, life sentiment, love and affection, and have high literary value. In China culture, Song Yu's poems have always been regarded as one of the representatives of elegant literature and are loved by literary lovers.