This is a purple agate pendant, about the size of Wu Mengting's thumb.
Wu Mengting held the purple agate and found it was tied with a red thread. She tried to pull it gently but found it seemed stuck. She gradually exerted more force, and the red thread slowly came out from the wall.
But at the last moment, the red thread was suddenly stuck.
"Mengting, what are you doing?" Chen Tianlong turned his head and suddenly saw Wu Mengting pulling something with a tense expression, instinctively stunned, and asked.
"Clang!"
At that moment, Wu Mengting gave it a hard tug, and right on the wall, less than a meter from the purple agate pendant, a sizable square opening appeared, about twenty centimeters long and ten centimeters wide.
More precisely, a space the size of two bricks.
