The main theme of the poem is to praise the noble character of bamboo
Be open-minded about its merits and demerits: the biological characteristic of bamboo is hollow, and the poet personifies it, saying that although bamboo is hollow, it is as open-minded as a valley and has a capacity. It is so big that it can absorb the merits and demerits of thousands of years. It shows that bamboo has a broad mind
Smiling proud of the severe winter frost and snow: Bamboo is evergreen all year round, tall and beautiful, and the poet used this to praise its noble quality that is not afraid of severe cold.
A life of tranquility and indifference, a life of high integrity and integrity: a very straightforward praise... It is said that bamboos are indifferent to fame and fortune, peaceful and far-reaching, and have high integrity and integrity