What is the standard size of Chinese chess pieces?

The 32 pieces of Chinese Chess are traditionally shaped in "cylindrical" and "drum" forms, which are the most common.

Chess pieces (drum-shaped): maximum diameter 35mm, end diameter 31mm, thickness 13mm.

Chess pieces (cylinder-shaped): diameter 30-35mm, thickness 12-16mm.

Supplementary: The standard chessboard used in tournaments should be square in every square. The length and width of each square should be 3.2 to 4.6 cm, and the diameter of each flat round piece should be 2.7 to 3.2 cm, and the size should be suitable for the board. The background color of the board and the pieces should be white or a light color. The straight and horizontal lines on the board should be red or dark in color, and there should be a suitable blank area around them. The color of the pieces is divided into two groups of red and black, and the font and frame should be conspicuous.