Possible Explanations of the Dropa Stones

There have been some possible explanations for the Dropa Stones, which I have been posting about for the last few days.
A possible interpretation on one of the Dropa Stones read something similar to this: The Dropas came down from the clouds in their aircraft. Our men, women and children hid in the caves ten times before sunrise. When at last they understood the sign language of the Dropas, they realized that the newcomers had peaceful intentions." There is no proof whether if the encoded message actually read this.
Some skeptics have written this off as a hoax and the stones can be explained. It is widely believe they are of a terrestrial origins.
Russian scientists have examined the stones and it was reported they are made of cobalt and have an unusual rhythm if a electrical charge were going through them.
Skeptics have claimed the Dropa disks are actually "bi discs", which were made between the Neolithic Period and were made up to the time of the Shang Dynasty. The "bi-discs" range just from a few inches in diameter up to several feet across. They are made out of jade or nephrite and also have a hole carved in the center.
A "bi-disc" was a discs that ranged in different sizes with a hole in the center, usually depicting dragons or other mythical creatures.
This is one possible explanation to the mystery surrounding the Dropa stones.
The man who supposedly translated the discs was named Tsum Um Nui, but no records show that the man actually existed, except when examining the Dropa Stones.
The Dropa Stone incident is often referred to "China's Roswell", because the same circumstances regarding extraterrestrial life landing on earth in New Mexico back in the 1940's.

Whatever the origin of the Dropa Stones are, skeptics have possible explanations of the discs. Whether the discs are of terrestrial or extraterrestrial, it has been in the extreme imaginations of skeptics and believes alike. Whether it is a hoax or an actual contact with another world, until the true answer is found it will remain a true mystery.