บท 695: First Time Opening the Door, the Seven Alphabets! Part 3

Liu Cheng immediately reported the newly discovered fact after calling the excited Li Hu, who observed them from a distance.

Through the gap they created was a combination lock that looked overwhelmingly complicated.

From left to right, there were twelve rows with incomprehensible symbols on them.

Just above the symbol sequence was a copper lever that could be triggered.

It was easy to open such locks.

The twelve rows with symbols had to be in their appropriate position, and the lever had to be pressed down, causing the mechanism inside to unlock itself.

Upon successfully unlocking the door, the lock plate placed inside would also begin functioning to pull or push open the door, making room for entry or exit.

The method was very old-fashioned but highly reliable.

There was no need to rely on any facilities that required energy, nor would there be any reliability issues that would occur.

The only tricky part was that…