Weird Feeling

"Kai! Come here. I think I have found something." Isabelle shouted. Although most of the ornaments were already covered with dust, she could still somehow figure it out due to the slight difference from an ordinary wall.

After wiping out the dust with her hands, she saw a certain symbol.

Hearing her voice, he quickly came to Isabelle to see what she found. "This is a symbol?"

The drawing consisted of a few horizontal lines with a dot between them.

"I am not sure." Isabelle shook her head. "I thought it was a morse code at first, but the dot and the line were not aligned. So, I tried to see the other symbols, but they were in a similar pattern with lines and dots. Maybe a language?"

"I am not very sure." Alex shook his head. "Can you find something on the internet? Maybe a published paper or record?"