If you are eating at Sihaijia, there is a free bus (Sihaijia pick-up bus) that goes directly to the Hanxi Changlong subway entrance, and you can just take the subway to BC.

If you are not eating, the following bus methods are provided:

1. Walk about 510 meters from Sihaijia to Wanbo Center Station (Panyu) and take bus No. 186 (10 stops) to the subway From Luoxi Station (bus station), walk to Exit A of Luoxi Station on Jixiang North Street and transfer to Subway Line 2 (8 stops) and get off at Exit F of Gongyuanqian Station. Walk about 220 meters to Gongyuanqian Station.

2. Walk about 510 meters from Sihaijia to Wanbo Center Station (Panyu) and take bus 129 (15 stops) to Yungui Village Station, then transfer to 14 bus (6 stops) to Guangwei Road Terminus 12 Down.

Walk about 50 meters to Gongyuanqian Station

3. Walk about 510 meters from Sihaijia to Wanbo Center Station (Panyu) and take bus 302 (10 stops) to Tianhe North Road Station 1 and transfer to bus 6 ( Take 13 stops) and get off at Gongyuanqian Station

Personally, I prefer the subway, which is fast and comfortable. After all, the weather in Guangzhou is very hot