Is there a bus back to Sanya Haichang Dream Night City at night?

No. Learned from the information on Mafengwo.com. Sanya Haichang Dream Ocean City is located in Haitang Bay, Sanya, on the national coast. It combines Sanya's international, tropical and coastal elements to plan a marine-themed entertainment complex integrating cultural tourism, leisure vacation, entertainment experience and innovative business. Shuttle bus time, The morning shift is from 8:30 to 9:00, the mid-day shift is from 12:00 to 12.30, and the evening shift is from 15:00 to 15.30.