Take the high-speed train. Take Metro Line 3 from Guangzhou Baiyun Airport to Guangzhou South Railway Station and transfer to the high-speed train for Dongguan. Guangzhou South Railway Station is a high-speed rail hub in the south of China, and there are many high-speed rail lines that can reach Dongguan. Among them, the Guangzhou-Shenzhen-Hong Kong high-speed railway is the most convenient, and it only takes about 30 minutes to drive from Guangzhou South Railway Station to Dongguan.