玄之又玄

 玄 Bronze

Black Pearl

密碼

personal identification number

PIN

Π & VaGuS

Πιಀ(ँ)चन्द्रबिन्दु (candrabindu, literally “moon dot”)

π (mathematics) Pi, an irrational constant representing the ratio of the circumference of a circle to its diameter

Πιꣲ / Πιꣲéal/ΠιTuiTaire

White Pearl