1. Take the Beijing-Kowloon train to Heze in Shenzhen, and then take the bus from Heze to Jining. Ticket price: around 26.
You can fly to Xuzhou, and then take a bus from Xuzhou to Jining. Ticket price: around 38.
You can fly to Jinan, and then take a bus from Jinan to Jining. Ticket price: around 33.
If you are not in a hurry or don't want to spend too much money, you can choose the train.