From Siyang to Huaian No. 1 Hospital, you can take buses Siyang 66 East Line and Kuai 3 Road. The specific route is as follows:

1. First walk 430 meters from Siyang to Qunzhong Building Station, take the Siyang No. 66 east line bus and pass through 3 stops including Dehua Yishu, and then go to the southeast of Shunfeng Bus Station Get off at Men Station.

2. Next, transfer to the Sihuai Intercity Special Line Bus, get off at Huai'an North Bus Station, and then walk 510 meters to get on the bus at Taizhou Shangcheng Station.

3. Finally, take bus No. 3, which passes through 3 stops including the Subei Market, then get off at Dongmen Station of the First Hospital of Huaian City and walk 180 meters to reach the First Hospital of Huaian City.

In addition, you can also choose other bus lines, such as No. 15, No. 43, No. 48, etc. The specific routes may differ due to route adjustments and site changes. It is recommended to check the bus route map or consult local buses. Contact station staff for the latest route and ride information.