In my personal opinion it is still quite durable, but in relative terms I think durability has declined considerably because I think the foundation of its durability, particularly elite stability, has been eroded.
China has been a country of crony capitalism for many years—since reform and opening up in 1979—and I think in the last 10 years or so the very foundation, the glue, that holds the system together, which is mutual trading of interest and reciprocity, has been eroded by President Xi's anti-corruption campaign. He has really torn the fabric that holds the elite politicians together.