Booked 11 nights at Hyatt Place Deqing. The first 10 nights were two 5-night mall packages from the mini-program at 1400/5 nights, which shouldn't earn the 1,000 points. Then I added one more night with a points package rate (400 per night, earn 1,000 points).
In the end, it seems all 11 nights earned 1,000 points each, so there were 11,000 bonus points. Feature or Bug? Could this be applied to all other hotels with points package rates?

I tend to see it as the system treating the entire stay as a whole rather than identifying that one night's points package separately; as long as the reservations are merged under the same confirmation number, the later segment's rules may apply to the entire stay.