Executions in Pakistan: Is ISIS targeting China?
http://edition.cnn.com/2017/06/14/opinions/china-isis-pakistan/index.html
Before Belt and Road Initiative was released, ISIS had already announced that China is one of their potential enemies, and planned to conquer Xinjianng area.
But, as the article says, execution of the detained Chinese would mean ISIS began to treat China as the explicit enemy.
How China takes actions on ISIS will affect whether or not the initiative succeeds