Summary: a. As shown in Figure 5, after getting to the island from the visitor center (1), walk from the pier to the diving center (2), train to the training pool (3), take a boat from the pier to the floating row after training (4), take a boat back to the pier (5) after diving, then walk back to the diving center to take a bath and change clothes (6).b. Travel time: 2023/07/11c. Travel Location: Hainan Lingshui Boundary Island d. The whole journey cost: self-driving + ticket 617 (including the ferry tickets on and off the island + training + diving) + bought bread and drinks in advance 20e. Because I didn't plan to stay on the island, I went back after diving. We arrived at noon. The diving took about 4-5 hours. In fact, you can go to the island early and then go diving 2. Prepare in advance: a. You can prepare food by yourself, or eat on the island, which is a bit more expensive than normal prices. b. No need to bring a swimsuit, the diving center will provide a wetsuit and diving shoes, of course, those who are clean can also prepare by themselves. c. Book a ticket on Trip.com one day in advance, superimposed Lingshui tourism consumption volume 617 per person. d. After booking the ticket, contact the PADI diving housekeeper of Boundary Island in advance to provide height, weight and shoe code. After receiving the SMS on the island, you can go directly to the pier with the QR code. No need to change tickets and no need to wait. 2. On the island stage: passenger ship arrangement (swiping the QR code on the island, not on the island), a. During the day ( 8:30-17:30 ) rolling ship b. Night (17:30-22:3