How much (Water Park + International Circus) during May'24-25

Well, if you want to buy the combo ticket of Internatioanl Circus and Water park, you need to tour around these two places in the same day. So according to your travel plan, you cannot buy it. In addition, according to the official website, the ticket fare of this combo ticket in April is CNY 380 per person. And the official doesn't declare the ticket fare in May.

So you are suggested to buy the ticket separately.
The ticket fare of International Circus is CNY 280 per person in May.
During that period of time, the ticket fare of Water Park is CNY 200 per adult and CNY 140 for children between 3.3 feet to 4.9 feet. Children under 3.3 feet can enjoy the free ticket.

okay noted, thanks for reply. few more questions.

Is the water park open on May 24 , 25. ?
After Circus, do we have any transport to nearest Metro train , because its very late night?

Yes, the water park opens on that two days. :)
After seeing the performance in Circus, you can take tourist free shuttle bus to get to Kecun Station (Subway line 8) first. Then transfer to subways to return to your hotel.