It depends on where you are going. Shenzhen OCT Happy Valley Window of the World has more than 200 tickets, but Baidu suggests that online tickets can be cheaper because there are no student tickets! Accommodation is expensive. There are basically more than 200 hotels and more than 200 homes in 7 days. However, in cheaper areas, Shenzhen&;s consumption is also relatively high. For two people, I think it&;s about 1500.