Once my Dragon Power exceeded 5000, I could do the portal(?) event twice!

The event I always do when I started it this time, suddenly had two parts: Act 1 and Act 2. My Dragon Power is over 7000 now, but 2-3 days before this event started, it was just over 5000. I think once your Dragon Power exceeds 5000, the portal event might appear like this for others too. If you finish Act 1 quickly like usual, you get the regular reward + a rush reward. After Act 1, you can participate in Act 2, which doesn't have a rush reward. However, the rewards in Act 2 are better. The maps for Act 1 and Act 2 are different, and you can get all the rewards by reaching level 9 on two item points in each. I don't know if it's just for this time, but Act 2 was easier than Act 1.