120- institutional transactions are transactional open index securities investments, and the fund is linked to fund fund contract funds. In reality, transactions can be barter (such as equivalent exchange of goods) or money for money (currency exchange); Most transactions in the internet financial world refer to the exchange of price and value based on stocks, funds, foreign exchange, spot, futures and options, and earn the intermediate price difference according to the price fluctuation of different target varieties, which is also commonly known as transactions.