The ancients said that "people who have no long-term worries must have immediate worries". Those who are foresight are at peace, those who are without worries are in danger, which means to consider the possible adverse situations before they happen and take countermeasures, so that when things happen, there will be no danger. On the contrary, if there is no consideration and no response measures beforehand, once something happens, the consequences will be disastrous.