I mean, we both know the US will cause issues.They didn't... But they have a bit of experience with very low level resistance in Xinjiang, a they have allies with a bit more in Myanmar that they could bring in as consultants.
Unlike Soviets, they aren't bankrupt (yet) and don't need to hold a massive amount of their first rate troops on a long border with NATO. Overall seems like a great target for them to test their military while keeping the conflict low stake - much like Soviets and USA, they will always be free to withdraw, and be back to square one. Unlike shenanigans in SEA which risk involving naval escalation with first rate western powers and Asian rivals, or getting southern neighbors to ally with above and inviting them to base there.
We always do