It is not free. According to Ctrip. Com, Baoshan Riyue parking lot charges are as follows:

1. Parking time: 8: 00 -22: 00.

2. Parking fee: 3 yuan for the first hour and 2 yuan for every hour thereafter.

3. For vehicles parked for more than 24 hours, the maximum daily charge is 16 yuan.

4. From 22: 00 pm to 8: 00 pm, the parking fee is 5 yuan/time.