How many buses can I take to Longcheng Plaza from Jiahui Weather?

You asked about Jiahui Overpass, not Jiahui weather. It was a typo.

Bus line: No. 866, the total journey is about 9.2 kilometers

1. Walk about 20 meters from Jiahui Overpass to Jiahui Overpass Station

2. Take Take Route 866, go through 9 stops, and arrive at Longcheng Square Subway Station

3. Walk about 420 meters to Longcheng Square