Summer is the peak season at Huangguoshu. To help visitors plan, the scenic area sets special summer opening and ticket hours: the park opens early in the morning, the main fall, Doupotang and Tianxingqiao each have their own closing times, and the two halves of Tianxingqiao may differ; on-site counters also have set start and end times for selling and admitting.
As the exact times vary by year and date, check the day's online booking channel and on-site notices before you go. Plan your arrival and try to avoid the peak entry windows.