The lyrics of this song contain many idioms and some uncommon words. Although the knowledge points are dense, it takes several times to recognize them all, but for high school children, learning this song is not only entertaining, but also can consolidate new knowledge points. Although it is certain that this song is helpful to understand rare words in all aspects, many people think that they still don't know these words without lyrics.
There are many idioms and disyllabic words in this song. From the characteristics of memory, associative memory and situational memory will be more profound. However, some idioms in the lyrics are used frequently, such as being alone, being in cahoots, acting alone and being personable. Understanding their meanings will bring some convenience to the context and composition.
Moreover, one of the reasons why uncommon characters are uncommon is that they are rarely used and seen, but it does not prevent them from being Chinese characters in China, nor does it prevent them from having a long history. Our ancestors created them with wisdom and used them. Examples can be found in existing literary works and ancient history books. I hope that every Chinese character in China is a story that can spread to every corner of the world.