For the last two decades, the U.S. presence in Afghanistan kept the terrorist threat from that country in check, meaning China did not need to preoccupy itself too much with security challenges. With the U.S. exit, that security buffer is gone, as is the distraction of the great American Satan being present on Afghan soil.

China has sought to strengthen its direct defenses with Afghanistan through building bases and providing support to Tajik and Pakistani forces on either side of the Wakhan Corridor, alongside building its own direct bases in Tajikistan and bases for the former national Afghan government forces in Badakhshan (bases whose current status is unknown but presumably now under Taliban control).

This somewhat limited effort was being carried out when the United States was still there and providing definitive assurances to keep militant groups in check and even helping target anti-Chinese groups. In February 2018, the U.S. military targeted a series of camps in Badakhshan that were reportedly being used by the Taliban and ETIM.

Sindhi and Baloch ethnoseparatist groups perceive China as a neocolonial power usurping their resources and partnering with their primary adversary, the Pakistani state

The problem for China could get even worse. While the United States was at the receiving end of jihadi attacks for intervening in Afghanistan and for what was perceived as a broader anti-Muslim crusade as a result of the global war on terror, China is confronted with the ire of both the jihadi and the ethnoseparatist groups in the region.

Sindhi and Baloch ethnoseparatist groups perceive China as a neocolonial power usurping their resources and partnering with their primary adversary, the Pakistani state, to worsen their already abysmal socioeconomic condition. This was clearly articulated in the Baloch Liberation Front's claim of responsibility for shooting at the Chinese nationals in Karachi: "In the garb of development projects, China is not only colluding with the Pakistani state in plundering the Baloch resources but assisting in the Baloch community's persecution as well."

Jihadi groups have been less focused in their anger toward China, continuing to see the United States and the West as their primary external adversaries. But at the same time, there is a palpable uptick in propaganda narratives directed toward China. This is often linked to Beijing's persecution of the beleaguered Uyghur Muslim community in China's Xinjiang region.

Rising ideologues like the mufti Abu Zar al-Burmi--originally from Myanmar--tie these narratives together. Since 2015, the firebrand orator Burmi has been framing China as the next neocolonial power after the U.S. pullout from Afghanistan. Burmi, for instance, told his followers in a statement, "Mujahideen should know that the coming enemy of the ummah is China, which is developing its weapons day after day to fight the Muslims." In another video, titled "Let's Disturb China," he argues that after the "Taliban's victory in Afghanistan ... our next target will be China."

His anti-Chinese rhetoric, combining narratives of Chinese colonialism (in his native Myanmar as well as Xinjiang) with accounts of Muslim persecution, has drawn jihadi attention to Beijing. Echoes of these sentiments are also found among some Indonesian jihadi groups and among ultranationalists in Central Asia.