Why did earthquake 2 "not chase, but get it in seven days?"

Divination in Zhouyi is a kind of divination record, and the specific reason is hard to know now. But when divining, this omen.

2. Original text:

Earthquake divination:

Sixty-two, the earthquake came and went, and hundreds of millions of people lost their shells. They jumped into nine tombs, and they were not driven away, so they got it in seven days.

3. Translation:

62: Lightning is very dangerous. Businessmen are worried about losing their property and flock to the market. He was told not to worry, and he could make up for the loss in seven or eight days.