Yeah, Xi Jinping sure looks endangered by a growing Chinese educated middle class.
Nah, the Saudis will be fine with MBS in power as long as they get their movie theaters and Lexus SUVs.
MBS does not possess the Chinese state security apparatus, while Xi Jinping does not have to deal with millions of young men whose only education is in theology and only work experience in fake government jobs. Xi Jinping has full control over every intelligence, political and military institution in his country, MBS cannot properly train his own armed forces in case they rebel. Most importantly, Xi Jinping is talented & experienced, well liked by the general populace and the civil & military branches of his government. MBS is young, inexperienced, surrounded by rival princes, clerics and officials
*EDIT
It's the difference between an absolute monarch and a presidential autocrat tbh. Not to be overlooked is how Saudi Arabia has under MBS failed in most all of its foreign policy objectives. Lost in Yemen, drove Qatar to Iran, lost Syria & Iraq, his bid to gain acceptance in the West torpedoed by Khashoggi, whilst Xi Jinping has the belt & road initiative, domestic anti-corruption crusades whilst he's winning versus the USA