But on these two wooden rods, there are no traces of any buckles; it's a complete rod.
The key must lie within that thick square board; there must be a clever mechanism inside.
"How do you put it away?" Qin Yao asked curiously.
Liu the carpenter pointed to the bottom of the thick board, "You push the protruding wood block back in, and it will come down."
Qin Yao followed suit and indeed found a thumb-sized protruding square block at the bottom of the thick square board. With a slight push, the upright handle rods retracted with a "whoosh," transforming into a handle slightly taller by five centimeters than the book box.
"How ingenious!" Qin Yao praised.
Liu the carpenter smiled, quite pleased, "This is a unique skill passed down to me by my master, so I won't tell you about the mechanism inside."
Such secretive mechanisms are sworn to secrecy before learning, only taught to disciples who become inner apprentices.
