China has a strong self-interest in the peace process: Beijing’s main concern is that terrorist violence in Afghanistan will spill over either to Central Asia and then into its Western Xinjiang province or into Pakistan.
With this situation, it is crucial to continue working towards a peace agreement instead of letting the country further slide into violence. Since the U.S. is apparently retreating from engagement, the question is whether other stakeholders could step in to broker peace. As I wrote in an earlier piece, countries such as Germany have already been engaged to push for an intra-Afghan peace process (between the Taliban and the Afghan government), and China also attempted to use diplomacy to improve security in Afghanistan, focusing mainly on peacemaking and mediation with the Taliban. Russia too launched a regional meeting on Afghanistan involving the Central Asian states.