Interesting details, new to me.
It is interesting to note that in the past some people stamped this passage (Daniel 5) and all of the Book of Daniel as mere myth-telling because Historians didn’t believe there was such a king as Belshazzar who ever reigned in Babylon. But in 1854, a member of the British Consul was exploring ancient ruins in southern Iraq and dug into a great tower built there. He found a time capsule: clay cylinders inscribed with cuneiform writing; the cylinders were inscribed at the time of Nabonidus, king of Babylon from 555-539 B.C., and commemorated repairs the king made to the tower; they included a prayer for long life of Nabonidus and his oldest son, Belshazzar, proving Belshazzar was not a fictional character.