Does hangzhou paradise need money to play after buying a ticket?

No, it's basically free. Free items: roller coaster, rapids, pirate ship for two, brave turntable, dream gyro, brave game, spinning flying chair, ropeway, curtain movie, free fall, double-deck carousel, super-fast windmill, bumper car, samba balloon, children's bouncing car, bees, Dumbo, UFO, children's dumper, bubble ball park.