sìn-poe信杯

moon blocks

moon blocks (divination device); good result in divination using moon blocks (showing with one block flat and another block round)

divination

English Wiktionary, “信杯” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E4%BF%A1%E6%9D%AF · confidence: Medium (Wiktionary)