1. pi coins can only be traded after being selected by the exchange, and the specific trading time cannot be determined. The future development of pi currency, like other public chains, can allow internal and external wallets to hold and trade. In addition, pinetwork is establishing a peer-to-peer market where all members can purchase goods and services directly in PI currency. PI needs a smart phone to mine, and does not need to open the software frequently, which has no effect on the performance of the mobile phone. It is a free mineral coin; If you are not sure whether you can participate in the transaction.

2. An exchange is an information platform for trading certain information and commodities. The required fixed position is called exchange. With the help of the information platform of the exchange, the sharing, remote transaction and unified coordination of property rights information can be realized, and the balance between the property rights trading market and various terms can be realized. In the stock exchange market or commodity exchange market, transactions can be spot or futures. Usually divided into stock exchanges and commodity exchanges. Stocks and corporate bonds are trading objects, which are called securities trading places; Commodity exchanges are those that trade cotton, wheat, iron ore, crude oil and other commodities.