First of all, if the fund is closed, it cannot be redeemed.

Secondly, when the fund is redeemed in large amount (redemption accounts for 10% of the total fund size), the fund cannot be redeemed.

Not during business hours (Monday to Friday 9: 00 ~ 15: 00, closed at noon).

Accidents (such as trading system paralysis or interruption, small probability events, which have happened in history) can't happen either.