How often can I have a second divination for the same question?

There should be no taboos, but we usually consciously avoid the problem of secondary divination, just like industry rules and taboos, which can be regarded as a rut. However, if a major event happens and affects the course of the event, re-divination is actually equivalent to another divination. It is not appropriate to do the second divination at this time, because the initial conditions have changed, so the result will naturally change. As for whether the event you mentioned was included in the initial divination, it depends on the specific situation and is related to the ability of the fortune teller. Even if the initial divination results are included, it is useless to see the ability.