The CRH1 EMU, also known as Hexie, is a high-speed train operated by China Railway and built by a joint venture between Bombardier Transportation and Sifang at Bombardier Sifang Power Transportation factory in Qingdao, Shandong Province, People's Republic of China.

Hexie, also known as the CRH series EMU, is an umbrella term for the multiple unit high-speed and higher-speed trains operated by China Railway under the China Railway High-speed brand. All series of Hexie are based on foreign-developed technology and later manufactured locally in China through technology transfer licenses, with the ultimate goal of China acquiring the know-how and capability to produce high-speed rail trains.