1/ Eric Berger @sciguyspace writes in an insightful article on China's plans
"For this reason, the reusable #LongMarch9 design may use clusters of smaller liquid-fueled engines—possibly based on methane as a propellant, like #Starship." [not 1m thrust #YF100]
A subset of smaller engines allows thrust to be varied during landing and enables reuses
Read the full article here: https://arstechnica.com/science/2022/11/china-is-scrapping-plans-for-an-sls-like-rocket-in-favor-of-reusable-booster/