Could the stone doors really imitate human speech or store voices to be used later?

For a civilization like this—an ancient, primitive Zhongyuan society from a bygone era—it seemed impossible. Not even the Blood Cult’s top technicians could create something that advanced, such as an audio announcement when the door opens.

In fact, the stone doors didn't even open by themselves. They were purely manual, operated by hand using a simple pulley system. The Blood Cult technicians were currently sweating profusely, using all their strength to crank the stone door open.

One might think, "Isn't this a bit too primitive?"