How can I to go White Cloud Mountain from Marriott Hotel @ Tian He Lu?

From your hotel, you can walk to reach Tianhe Sports Center South Subway Station to take APM Line to reach Linhexi Station where you can change to line 3 to reach the East Railway Station. Then you can take a taxi to reach Yuntai Garden. Then you can easily find the path to reach the mountain.
From the East Railway Station to Yuntai Garden, there is about 5km.