1, "But let the flying commander of Longcheng be there, and don't teach the Hu people to cross the Yinshan Mountain", which means that as long as the flying commander of Longcheng is still there, the Hu people's cavalry will not be allowed to cross the Yinshan Mountain. He expressed Li Bai's patriotic feelings and hoped that a brave general could defend his country.
"A leopard cannot change his spots" means that although the country has been attacked by the enemy, mountains and rivers still exist. The city in spring is lush and full of vitality. Expressed Li Bai's deep anxiety and expectation for the country. Even if the country suffers a disaster, the mountains and rivers are still magnificent and the people are still tenacious.