Which bus should I take from Ensmai to Songgang to cross the rainbow?

Take Metro Line 2 from Ensmai to Songgang to cross the rainbow. According to Baidu map, it takes 70 minutes for Ensmai to cross the rainbow from Songgang 16.24 km. The detailed bus routes are as follows:

1. Take Metro Line 2 to Guangzhou South Station, then take Bus B7 at Guangzhou South Station and get off at Songgang above Rainbow Station.

2. Take Metro Line 2 to Songgang Station, then take M203 bus at Exit A of Songgang Station, cross Rainbow Station and get off at Songgang Station.