It is accompanied by a bamboo plaque made to commemorate King Yeongjo’s installation as crown prince.
(Jukchaek (竹冊) – A book made of bamboo.)
The bamboo box is lacquered black and decorated with plum blossom, bamboo, orchid, and phoenix patterns in gold.
https://100.daum.net/encyclopedia/view/183XXXYM80LJE
Store the bamboo book below in the upper box. Jade treasure box(莊祖妃玉冊函)
Jade book box belonging to Queen Heongyeong (Hyegyeonggung Hong), the wife of Jangjo (Crown Sado).
A box to store jade books made by King Jeongjo in 1795 when he gave his mother, Lady Hyegyeonggung Hong, the additional title of ‘Hwimok (徽穆).’
The surface is painted red and decorated with gold, including plum blossoms, bamboo, orchids, and phoenixes.
https://100.daum.net/encyclopedia/view/183XXXYM81LJE
Store the jade book (book made of jade) below in the upper box. Below is another major box from the Joseon royal family.