It is difficult for the country to add poems to change the meaning of the sentence "When can a solitary crane fly?".

1, I can't add what is suitable for my treatment, and I can't change the poems that are suitable for my descendants. In this case, I will come and go anywhere freely like a wild crane in the cloud and live like a fly.

2. In the Song Dynasty, Wen Ying wrote "A Record of Continued Hunan Shan Ye": "If the country is in trouble, the poem will not change. However, why not fly evil in the clouds? "