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How long can I enter the new area without playing the old number of the kingdom era?

Every once in a while, one or even several new districts will be built in the kingdom era. I don't know how many districts have been built now, and I haven't seen them.

For example, the 700-zone was established in the kingdom era, and this new zone has a 90-day protection period. During the protection period, players in the area before the 700 area cannot cross the 700 area, but people in the 700 area can cross the area in front. 30 days is the protection period, and the protection period ends after 30 days. At this time, we call it an open area. Open area means that players before the 700 area can fly directly into this area as long as they have enough air tickets.