The fixed investment of the fund stipulates the rules about buying, including the term, time, amount, specific fund, or the change of amount. But it is basically not stipulated to sell. So the fund will only buy, regardless of selling. If you want to sell, you need to log in to the trading system to redeem the fund.

However, some fixed investment forms will stipulate that under certain market conditions, the foundation will switch from high risk to low risk, but this is not a redemption behavior, but a fund conversion. The purpose of transferring out is to avoid risks. If the market turns better, switch back.