PI coin, also known as Pi Network, is a virtual Digital Money developed by a team of Stanford University PhDs. The project aims to achieve universal participation in Block chain Mining through mobile applications, lowering the barrier to traditional Cryptocurrency Mining. The total supply of PI coin is 21 billion, with a relatively large Circulating Supply. Although PI coin has not yet been fully listed on mainstream exchanges, its unique mining method and large user base have attracted significant attention. However, PI coin also faces multiple challenges such as exchange listing, ecosystem development, and regulatory policies, making its future development uncertain. Investors should exercise caution regarding the investment risks of PI coin.