Take subway line 4, transfer to subway line 8, and then transfer to subway line 2. According to Baidu map, the distance from Guangzhou Tianhe Olympic Sports Center to the International Outlets is 18.4 km. It takes 47 minutes to take Metro Line 4, transfer to Metro Line 8 and then transfer to Metro Line 2. The specific bus routes are as follows:

1. First, start from Guangzhou Tianhe Olympic Sports Center, walk150m to Huangcun Station, get on at Huangcun Station, and take Metro Line 4 to Wanshengwei Station.

Secondly, take Metro Line 8 and get on at Wanshengwei Station, and get off at Changgang Station.

3. Finally, get on at Changgang Station, get off at Jiangnan West Station by Metro Line 2, and walk 640 meters to Wanguo Outlets.