China has described the 2008 Mumbai attacks carried out by Pakistan-based Lashkar-e-Taiba (LeT) terror outfit as one of the most notorious terrorist attacks. <br />''<br />''In a white paper on its massive crackdown against terrorists in the restive Xianjiang province, China said, the global spread of terrorism and extremism over the years had inflicted agony on humanity. <br />''<br />''The release of the paper titled "The Fight Against Terrorism and Extremism and Human Rights Protection in Xinjiang", coincided with Pakistan Foreign Minister's Shah Mehmood Qureshi's visit to China.<br />''<br />''The white paper released by China's State Council Information Office said, throughout the world, terrorism and extremism gravely threaten peace and development, and endanger the life and property of individuals.<br />''<br />''<span style="color: #222222;">The paper came days after China for the fourth time blocked a bid in the United Nations Security Council on Wednesday to designate Pakistan-based Jaish-e-Mohammed  (JeM) terror group chief Masood Azhar as a global terrorist by putting a technical hold on the proposal, a move India termed as disappointing.  The JeM has claimed responsibility for the Pulwama attack. </span>