How do I get to Baiyun park subway station line 2 exit B from Yonghe Economic Development District?

You can go to Yonghe Bus Station where you can take city bus Guangzeng Line 2 to reach Tianhe Bus Terminal and then you can take local subway line 3 to reach Tiyuxilu Station and then change to line 1 to reach Gongyuanqian Station. Then you can change to line 2 to reach Baiyun Gongyuan Station.