If you want to take the train, you can choose the K365/K364 or K483/K482 train (Guangzhou~Kunming), and then you can take the bus directly to Tengchong, or take the train from Kunming to Dali and transfer to the bus if you choose to take

By airplane, you can choose the flight from Guangzhou to Kunming, and then follow the same method as above; or take the flight from Guangzhou to Baoshan every Wednesday, Friday, and Sunday and then transfer to the bus in Baoshan to Tengchong.