Fuxing (simplified Chinese: 复兴号; traditional Chinese: 復興號; pinyin: Fùxīng Hào; lit. 'Rejuvenation'), also known as the CR series EMU (or as the Fuxing Hao), is a series of high-speed and higher-speed EMU trains operated by China Railway High-speed (CRH) and developed by CRRC. They are the first successful high-speed trains to be designed and manufactured in China.

Initially known as the China Standardized EMU, development on the project started in 2012, and the design plan was finished in September 2014. The first EMU rolled off the production line on 30 June 2015. The series received its current designation of Fuxing in June 2017, with nicknames such as "Red Dragon" (CR400AF) and "Golden Phoenix" (CR400BF) for certain units. It is among the world's fastest conventional high-speed trains in regular service, with an operating speed of 350 km/h (220 mph) for the CR400AF and CR400BF models.

Internationally exported versions of the train sets also operate in Indonesia on the Jakarta–Bandung high-speed railway from 2023, with a derivative version of the CR400AF, also known as the KCIC400AF or "Komodo Merah" (literally: red Komodo dragon) or "Petir Merah" (literally: red lightning).

The upcoming CR450AF and CR450BF, designed for a maximum operating speed of 400 km/h (250 mph), are expected to enter service by 2025. In 2023, Chinese state media reported a CR450 train attained a speed of 453 km/h (281 mph) during a test run.

In 2004, China's Ministry of Railways contracted Bombardier Transportation, Kawasaki Heavy Industries and Alstom to supply the first high-speed trains for China, which later known as Hexie (simplified Chinese: 和谐号; traditional Chinese: 和諧號; pinyin: Héxié Hào; lit. 'Harmony'), with Chinese partners CNR and CSR. The four foreign companies agreed to manufacture high-speed trains for China as well as provide technology transfer for local production.

Some of the Hexie (Harmony) train sets are manufactured locally through technology transfer, a key requirement for China. The signalling, track and support structures, control software, and station design are developed domestically with additional foreign elements. By 2010, the track system as a whole was predominantly Chinese. China currently holds many new patents related to the internal components of these trains, re-designed in China to allow the trains to run at higher speeds than the foreign designs allowed.

However, most of Hexie's (Harmony's) patents are only valid within China, and as such hold no international power. The weakness of intellectual property of Hexie caused obstacles for China to export its high-speed rail related technology, which led to the development of the completely redesigned train brand called Fuxing (simplified Chinese: 复兴号; traditional Chinese: 復興號; pinyin: Fùxīng Hào; lit. 'Rejuvenation') that is based on local technology.

Started in 2012, CNR Changchun Railway Vehicles (now CRRC Changchun Railway Vehicles), under the guidance of China Railway Corporation, with a collection of enterprises, universities, and research institutes, carried out the development of a more advanced China Standardized EMU. In December 2013, CRRC Changchun completed developing the general technical conditions for EMUs, and completed the plan design in September 2014. The new EMU was rolled off the production line on 30 June 2015.