China is Working on a Rocket as Powerful as the Saturn V, Could Launch by 2030

“A complete prototype for the engine in the 500-metric-ton class can be built and assembled this year... Because of the great parameter changes that come with rises in thrust, the current test and verification equipment cannot satisfy requirements [of the Moon rocket propulsion program]. We cannot always do 1:1 scale tests. As a result, only simulations and scaled-down tests can be done for some technology and hardware. This increases the degree of difficulty for the program.”