"Your brother?"
Shen Congwen smiled again, but this time, he did not explain anything; instead, he made a welcoming gesture and led Chu Ge and the others in front of a mural, "The door to the basement is right behind this mural."
Speaking, he knocked three times on the wall, then moved to another side and knocked three more times. Subsequently, he gently inserted a key into the mural, and it indeed went in.
Huo Tianqian, a straightforward man, scratched his head in confusion, "What kind of high technology is this? Why the need to knock these three times? Can't you just directly insert the key? It's all so mysterious and secretive."
Shen Congwen explained, "This mural cannot have the key directly inserted. If someone who doesn't know does that, not only will it fail to open the door to the basement and add another lock, but the basement will also become a completely sealed chamber. Unless you blow up this villa with dynamite, you can forget about getting inside."
