Ankang drove to Chengdu and passed through those service areas.

Expressway, Cheng Kang, passing through three service areas, namely Nanwutai Service Area, Xi 'an Service Area and Cheng Kang expressway Zhen 'an Service Area, is the trunk line of China National Road and the western corridor section from Arongqi, Inner Mongolia to Beihai, Guangxi. expressway, Cheng Kang is the second Ankang-Chengdu expressway after expressway in the Western Han Dynasty, which was officially opened to traffic on May 28, 2009. Service area refers to a place specially for passengers and drivers to rest, and should provide parking lots, public toilets, gas stations, vehicle repair shops, restaurants and canteens, with an average distance of about 50 kilometers. The construction scale of service area should adapt to the future traffic growth. The first-class service area has the most complete facilities and the highest quality, including gas stations, parking lots, convenience stores, free lounges, restaurants, auto repair shops, etc., and is usually equipped with better facilities such as accommodation and bathing. In addition, according to the demand and geographical location of the service area, service facilities such as business meeting room, logistics storage, freezer, tourism and leisure area can be planned and built in the service area.