centers from its suburban areas. Existing service until 2015 are S2 line from Yanqing County to Beijing, and Tianjin–Jixian Railway from Ji County to Tianjin. The Jinshan Railway from Jinshan County to Shanghai also fell in this category, but it is fully embedded in Shanghai Metro lines therefore tickets are not available on CR's website; while the other two offers more conventional service. Accommodation and fares High-speed rail Business Class Seat (), on a few services pending on train type, such as the CRH380AL or CRH380BL trains. 3 seats per row (2+1). Lie-flat seats with airline style catering provided. Premier Class Seat (), can vary, pending on train type, from being similar to Business Class style seats or First Class seats located in premier or sightseeing positions such as behind the drivers cab. 3 seats per row (2+1) or compartment seats. Unlike Business Class seats, these seats are not lie-flat seats, but can in general recline. First Class Seat (), used for CRH series EMU trains. There are 4 seats per row (2+2), just similar as soft seat. Second Class Seat (), used for CRH series EMU trains. Similar as hard seat, there are 5 seats per row (3+2), the sitting area is relatively small. Sleeper Berth, used for CRH series EMU trains. Found on only a few 'D' trains running overnight between Shanghai-Beijing or Beijing-Shenzhen. Similar as a soft sleeper on conventional trains but are limited to 4 berths to a compartment. Some upper berths can fold away to permit running purely as seated passengers. Conventional rail Hard seat () is the basic fare, somewhat similar to the economy class on an airplane. On busier routes, passengers who cannot arrange for better seats because of overcrowding must also purchase this type of ticket. In some cases, tickets are sold with no seat assigned (无座, wú zuò), which allows the railway to sell more tickets than there are seats in the car. Still, even the number of "no seat" tickets offered for sale is limited, to keep overcrowding within limits. Soft seat () is one level above the Hard Seat. There are 4 seats per row (2+2), so it has comfortable seating similar to business class on airplanes. Hard sleeper () is the basic accommodation for an overnight train. Despite the name, the bunks comfortably accommodate anyone below six feet. Bunks are arranged three on a side in a compartment—indicated