Technology/techniques
1. The structure of the "wooden base" is assembled using "mortise and tenon joints".
2. The lintels shall be either "straight lintels" or "helmet-shaped lintels."
3. The shoji screens shall be either "through-screens" or "flower-shaped screens."
Four of the units must be equipped with a "mitsumakuri" (a type of security device).
5. Palace construction should be based on the "hijiki-masugumi" (bracket and square bracket) method.
6. The painting shall be done by hand using refined lacquer, and in the case of "wood grain painting," a "roiro finish" shall be applied.
7. Apply maki-e (lacquerware with gold or silver powder) and gold leaf.








