It’s always been recognised that the Battlefield China Rising maps don’t have any Levolution in them. They have some mild weather events but nothing more.
Some have said that they’ve de-compiled the game and found sound files and scripts to go with missing features. DICE member DarkLord7854 stated on Reddit, though, that..
And they are all used, there are little to no unused assets, memory and storage space is an extremely scarce and valued resource (especially on consoles), it would not be squandered for assets that sit useless
When asked recently about this, Dennis Brännvall from DICE, stated that, rather than being removed, it was never intended.
@BeardyFPS No big scale levolution event in CR, no, never was planned. Focused on small, interactive stuff instead
— Dennis Brännvall (@DICE_FireWall) March 6, 2014
So, the official answer is – Levolution was never intended for China Rising.