Well, the sinkhole is definitely worth seeing, and the cliffside bookstore is beautiful at night when it's lit up. Changsheng Cave is also quite impressive; it's one of the most spectacular karst caves I've seen. Unfortunately, our itinerary was a bit poorly planned. After checking into our guesthouse and having lunch, around 1 PM, we went down to the sinkhole to see the cliffside bookstore instead of taking the mini-train to Changsheng Cave. Climbing back up from the sinkhole was difficult, and the kids didn't want to climb anymore; they wanted to wait until the bookstore lights up and the bonfire party, so we spent the entire afternoon and evening at the sinkhole. The next day, we planned to take the mini-train, but we thought it would leave at 9 AM, when it actually departs at 9:30. We arrived at the train station at 8:30 and didn't want to wait. We opted to walk to Changsheng Cave, and the climb was exhausting!