Which statement is correct about table and case furniture of the Tang Dynasty?

Which statement is correct about table and case furniture in the Tang Dynasty?

A. In the Tang Dynasty, some tables had four legs with a crossbar in the middle, and some used a traditional box-board type pot door with mud support structure

B. Although the table is a tall piece of furniture It had appeared and been basically finalized in the Tang Dynasty, but "cases" and "ji" were still the main household furniture in the Tang Dynasty

C. In the Tang Dynasty, some "ji" panels were made of whole panels, but There are trowel heads installed on both sides to prevent warping of several sides

D. According to the legs and feet, cases in the Tang Dynasty can be divided into gate-foot cases and board-foot cases

Correct answer: In the Tang Dynasty, some tables had four legs with a crossbar in the middle, and some used a traditional box-board type pot door with a mud support structure; although the table as a tall piece of furniture had already appeared in the Tang Dynasty and was basically finalized, the "case" and "ji" It was still the main storage furniture in the Tang Dynasty; some "ji" panels in the Tang Dynasty were made of whole boards, but trowels were installed on both sides to prevent the warping of the tables; cases in the Tang Dynasty can be divided into Zhazu case and Banzu case