Chin Yisou Mahjong
Mahjong 【麻雀】 (Sai. Vol 1 - Continuous)

☆ The old table top game originating in China, well-played in Japan as well. The typical time-killing game of the Sanzo Ikkou, it seems they carry only the pieces with them as they travel. It would take a long time so I won’t explain the rules, but it’s one of the unavoidable items in the Saiyuki world – a match developed in the Kami-sama arc wherein the Ikkou ignored the readers; and in the Chin Yisou arc the pieces were used as mediums to control the Shikigami.