Happy Valley Holds Fancy Ball

The costume ball will last from 6:00 p.m. all the way to 10:00 p.m., stretching the theme parks opening time for 4 hours.

Tourists who have spent their day at the park with their 160 yuan tickets can join in the ball at night, while those wishing to attend the masque only will be admitted to the park after 6:00 p.m.

"Happy Valley" hopes the event can make up for a slack season, reports say.