Let’s not forget that Eurasia is the cradle of civilization and flourished for many centuries. It’s only logical that those nations would want to reconstitute former glory. From Pepe Escobar at sputnikglobe.com:

© Sputnik / Pavel Byrkin
President Xi Jinping telling President Putin at the end of their summit last March in Moscow that we’re now facing “great changes not seen in a century” directly applies to the new spirit reigning across the Heartland.
Cue to the China-Central Asia summit last week in Xian, the former imperial capital, where Xi solidified the expansion of the Belt and Road Initiative (BRI) from Western China in Xinjiang to its western neighbors and then all the way to Iran, Turkiye and Eastern Europe.
Xi in Xian particularly stressed the complementing aspects between BRI and the Shanghai Cooperation Organization (SCO), once again showing that all five Central Asian “stans”, acting together, should counter-act the proverbial external interference via “terrorism, separatism and extremism”.
The message was stark: these hybrid war strategies are all integrated with the attempt by the Hegemon to continue fostering serial color revolutions. The purveyors of the “rules-based international order”, Xi implied, will go no holds barred to prevent ongoing Heartland integration.
But, but, but, muh Manifest Destiny?