How to get to 30 yuan from Chengdu to Zigong?

Don't get on the highway. Chengdu, referred to as "Rong" for short, is also called Rongcheng and Jincheng. The toll from Chengdu to Zigong should not be on the expressway in 30 yuan. The distance from Chengdu to Zigong is about 220km, and the toll is 90 yuan. Long-distance driving needs to check vehicle safety in advance and pay attention to driving safety, and arrange a reasonable rest in the middle. Don't overspeed and drink and drive.