Don't get off at the entrance of Qionghai Boao. Go straight until you see the entrance of Boao Hotel for Asia and Boao Forum for Asia. After you get off, there is a T-junction on the left. Go straight after the traffic lights, about 10 minutes.
By car:
1: (Save money) Take the bus, and get off at Haikou East Bus Station-Qionghai (25-30 yuan, about 90 minutes) and Qionghai-Lampe (5 yuan, 60 minutes).
2: (fastest) high-speed train, Haikou East Station-Boao (40 yuan, 50 minutes), those who leave the station by motorcycle go to the forum (15-20 yuan, 15 minutes).
Because there are few high-speed railway station from Haikou to Boao, you can buy Qionghai. After getting off the bus, take a bus or taxi to the bus station and buy a CMB ticket.