Do I need to make an appointment for Xi 'an World Expo Park?

yes. Xi 'an World Expo Park is open to visitors free of charge, as are Chang 'an Tower, Creative Pavilion, Nature Pavilion and Four Treasures Pavilion (one tower and three pavilions). Visitors to the scenic spot of Xi 'an World Expo Park need to reserve free tickets for one tower and three pavilions in advance, and "one tower and three pavilions" implements online real-name registration system reservation for visitors. Xi 'an World Expo Park is located in Guangyuntan, Chanba Ecological Zone, Xi 'an, about 1 kilometers away from the center of Xi 'an, and is the site of the 211 Xi 'an World Horticultural Exposition.