Loulan: refers to the border enemy.
According to Hanshu, King Loulan was greedy for money and killed many China envoys who went to the Western Regions. Later, Fu Jiezi was sent to the Western Regions to behead King Loulan and make contributions to the country.
In the Western Han Dynasty, Loulan was a small country, located on the main road leading to the western regions. Because Loulan prevented the envoys of the Han Dynasty from going to the Western Regions, Emperor Wu of the Han Dynasty sent troops to conquer this small country.
After the death of the old king Loulan, the new king Loulan betrayed the Han Dynasty at the instigation of the Xiongnu emissary and killed the envoys sent by the Han Dynasty to Dawan country many times. The Han Dynasty will send people to conquer Loulan again.
At this time, Fu Jiezi, a small official of the imperial court, volunteered to go to Dawan. General Huo Guang saw his courage and sent him to lead the troops. Fu Jiezi lived up to his mission and succeeded immediately, forcing King Loulan to apologize to the Han Dynasty. Fu Jiezi took advantage of the night, led the warriors to kill the Xiongnu emissary, and arrived at Dayuan safely.
During the reign of Emperor Zhao of Han Dynasty, Loulan was still willful. General Huo Guang sent Fu Jiezi to the Western Regions with a lot of precious gifts and capable soldiers, claiming that he had made a special trip to serve his country.
King Loulan is very greedy for money. It is said that the Han emperor sent envoys to the western regions to reward vassal States, and he was unprepared at all. Fu Jiezi set an ambush in the posthouse, invited King Loulan to the posthouse for dinner, killed King Loulan in one fell swoop, pacified Loulan, and made great achievements.
Poets often use "Loulan" to refer to the enemy of the border, and "breaking (splitting) Loulan" refers to making contributions.
Such as: Wang Changling's "Join the Army":
The bonfire is in the west of the city 100 feet, and it is windy and autumn in Shanghai at dusk. Guan Shanyue, who plays Qiangdi, is not worried about the golden boy Wan Li.
The new sound of pipa dance is always the old love. I can't listen to endless worries, and the high autumn moon shines on the Great Wall.
The elm leaves in Guancheng are early yellow, and the ancient battlefield in Shayunli is dusk. Please go back to the army to hide dust and bones, and don't teach soldiers to cry.
There is a dark snow-capped mountain in Qinghai, with long white clouds and a lonely city looking at Yumenguan. Yellow sand wears golden armor in hundreds of battles, but the loulan is not returned.
The desert is foggy, and the red flag is half rolled out of Yuanmen. The former army fought in Taohe River overnight, and it was reported that Tuguhun was captured alive.
Hu bottle flows purple and thin sweat, and the autumn moon in the west of the city is broken. Ming Xing Chi sealed the sword and told you to take Loulan overnight.
Yumen Mountain is a thousand miles long, and the mountain is always in the north and south. People should look at the fire from a distance, but they can't see the horses in the mountains.
Extended data
Allusions refer to canon and anecdotes. Ci Hai and Ci Yuan have two meanings for the word "allusions": First, the ancient meaning of the word "allusions" is somewhat equivalent to the "old facts" in modern Chinese, which refers to ancient laws and regulations, old events and old examples.
Of course, the allusion we are talking about today is the present meaning of the allusion. In the present sense of allusions, Modern Chinese Dictionary is interpreted as "stories or words in ancient books quoted in poetry". The explanations of Ci Hai and Ci Yuan are similar to this, saying that they are "ancient stories and words with sources quoted in poems".
Loulan's name first appeared in Historical Records. BC 176, Xiongnu brought a letter to China Emperor Liu Heng, saying that Loulan belonged to Xiongnu. In 60 BC, it was the capital of the Western Regions in the Han Dynasty. Loulan is a small country on the easternmost Silk Road in the Western Regions. Both China and Hungary want to control Loulan in order to compete for the Western Regions. Loulan is "not two genera, there is no way to be safe" between China and Hungary. In 77 BC, Fu Jiezi, a famous Western Han warrior and diplomat, killed King Loulan, whose country name was Shanshan. At Shanshan's request, the Han Dynasty sent troops to open up wasteland in Yixun City.
References:
Baidu encyclopedia-allusions
Baidu Encyclopedia-Loulan