What's the mystery of Loulan's characters?

From archaeological discoveries, we know that the official language used by Loulan people is Boruwen. According to the research of George Buller and others, Boruwen belongs to the phonetic symbol of Phoenician letters and evolved from Aramaic. At present, the earliest known Bolu language is the cliff law promulgated by Ashoka in ancient India in the third century BC. Around the first century A.D., it was regarded as one of the official languages of Shang Dynasty by the ingenious Central Asian artists. After the second century, Gui Shuang's inscriptions gradually adopted the Polo riddle, which was later abandoned with the demise of the dynasty. Baluwen was used in Khotan, Shanshan, Shule, Qiuci and other countries in ancient China when it tended to decline in Afghan and other places. As far as the number of bamboo slips discovered by Bolu is concerned, the materials discovered in Xinjiang are the most systematic and complete. Why did the Loulan dynasty use this kind of writing that has disappeared in Central Asia? Is the "Loulan" a "foreigner" who moved from Central Asia to the local area? So, what kind of migration route did they go through? Were there any aborigines living in this area before they moved in? What is their relationship with the aborigines? Because it is difficult to interpret Luwen, not all the materials have been interpreted, and the content of the interpretation is also controversial. Of course, a comprehensive interpretation of Bolu information is a key to a comprehensive understanding of the cultural connotation of Loulan.

Of course, the language discovered by Loulan is only a religious and official language, not a language of life. The language spoken by the natives is Northeastern and Indo-European, which has long been called "extinct language". Tuholo language is widely distributed in Tarim basin, and there are many dialect areas. Loulan people speak "European language". Are they the earliest European immigrants who moved in from distant Europe through Central Asia? The researchers are still very cautious. Because Loulan people use Indo-European language family, but linguistic evidence alone cannot confirm that they are descendants of Europe.