Ze Tian Ji Chapter 856

The red ‘中’, ‘two bamboo’, and ‘little chick’ are all mahjong tiles. ‘Two bamboo’ is a spear because it is two ‘sticks’ stacked on top of each other lengthwise. I believe ‘little chick’ refers to the ‘one bamboo’ tile, which is usually represented by a bird. As for the rest, I can only say that the Tang clan must be using a very unique set of mahjong tiles.