我们再看看Dihgan/Dungan在波斯语中的含义：
The dehqan or dihqan (Persian: دهقان), were a class of land-owning magnates during the Sassanid and early Islamic period, found throughout Iranian-speaking lands.[1]
东干人是萨珊帝国至伊斯兰时代初期伊朗语地区的封建领主阶级。
In the pre-Islamic Sassanid Empire, the dehqans were considered minor land-owners. The term dehqan emerged as a hereditary social class in the later Sassanid era, who managed local affairs and whom peasants were obliged to obey.
在前伊斯兰时代的萨珊帝国里，东干人被认为是小土地所有者。“东干”这个词在萨珊帝国时期被用来指一个世代相承的阶级，管理地区事务并接受农民的效忠。
在封建时代，领主是军队的核心，在骑兵部队中占据重要地位。考虑到半数回族人的祖先都来自蒙古人在花剌子模选拔的“探马赤军”（也就是中亚特色的骑兵部队），“东干”这个词的含义与东干人是现代伊朗人和粟特人的主子这一点是吻合的。

如图为萨珊帝国的等级制度。
从这张图可以看出，某些自称商人（suliya）和撒尔塔兀勒（sartaghul，意为农民）的家伙到底处在波斯帝国的哪个等级。

犹太人在萨珊帝国中有着非常重要的地位，他们不仅与波斯贵族通好，而且以渊博的学识进入了波斯帝国的智识阶层。萨珊帝国的几位皇后/太后，都是出自犹太名门的女性。
Shapur I (Or Shvor Malka, which is the Aramaic form of the name) was friendly to the Jews. His friendship with Shmuel gained many advantages for the Jewish community. According to rabbinical sources Shapur II's mother was Jewish, and this gave the Jewish community relative freedom of religion and many advantages. He was also friend of a Babylonian rabbi in the Talmud named Raba (Talmud),[disambiguation needed] Raba's friendship with Shapur II enabled him to secure a relaxation of the oppressive laws enacted against the Jews in the Persian Empire. In addition, Raba sometimes referred to his top student Abaye with the term Shvur Malka meaning "Shaput [the] King" because of his quick intellect. The wife of Yazdgerd I and the mother of Bahram V was Shushandukhtwho was the daughter of Exilarch Huna b. Nathan. Shushandukht secured many benefits for the Jewish community and ordered construction of Jewish neighborhoods in Shushtar, Susa, Hamedan and Isfahan. Some historians such as Ernst Herzfeld suggested that the Tomb of Esther and Mordechai in Hamedanmight be the tomb of Shushandukht.[19][20][21]

最后再上一张图，给某人脑补一下大呼罗珊的疆域。

你们粟特人的老家在黄圈那块（索格狄亚那），怎么突然就成了东呼罗珊人了？你们和呼罗珊有关系么？