1. You can take the train from Luohu to Panyu Shiqiao Bus Station, get off at Shiqiao Bus Station at the main station, and then take the bus 15 across the street to the main station (you can also take a motorcycle, usually around 10 yuan, I don't know where to get on the bus, just ask someone). It should take more than three hours.
You can go to Guangzhou by bus, and then get off at Shiqiao Station by subway. There are many motorcycles at Exit B and Exit D, so it should take more than 3 hours to get to 15 yuan by motorcycle.
Take a taxi by the way