Jiuzhou Yunjian (Chinese: 九州云箭; lit. 'China Cloud Arrow'), also known as JZYJ, is a Chinese rocket engine design and production startup based in Beijing...

engine burning liquid methane and liquid oxygen under development by Jiuzhou Yunjian. In 2018, the gas generator test for the Longyun engine was completed...

liquid methane and liquid oxygen under development by Jiuzhou Yunjian. In 2018, Jiuzhou Yunjian's Lingyun engine successfully passed tests for its gas-generator...

SpaceNews noted that the Chinese start-up Space Epoch and engine maker Jiuzhou Yunjian were developing a smaller Starship-like rocket with a methane-LOX engine...