The allusion used in this sentence is:
A glass of wine is Wan Li's home, but Ran Yan hasn't lost his mind.
Ran Yan, today's Mongolian Hang Ai Shan Le, carved a stone to record his achievements. Dou Xian, the general of the Eastern Han Dynasty, chased the northern Xiongnu, went to war for more than 3,000 miles, and returned to Ranyanshan to record his merits.
"Ran Yan Le Wei" means that he has not made great achievements in defeating the enemy. The poet vividly described the life and mood of soldiers.
It shows the hardships of defending the border region and reveals the melancholy of unfinished business and the yearning for hometown.