Chinese artists perform during a concert to celebrate the 67th anniversary of the establishment of China-Pakistan Diplomatic Relations in northwest Pakistan's Peshawar, on May 13, 2018. A Chinese concert was held in Peshawar on Sunday to celebrate the 67th anniversary of the establishment of China-Pakistan Diplomatic Relations. (Xinhua/Ahmad Kamal)

Chinese artists perform during a concert to celebrate the 67th anniversary of the establishment of China-Pakistan Diplomatic Relations in northwest Pakistan's Peshawar, on May 13, 2018. A Chinese concert was held in Peshawar on Sunday to celebrate the 67th anniversary of the establishment of China-Pakistan Diplomatic Relations. (Xinhua/Umar Qayyum)

Chinese artists perform during a concert to celebrate the 67th anniversary of the establishment of China-Pakistan Diplomatic Relations in northwest Pakistan's Peshawar, on May 13, 2018. A Chinese concert was held in Peshawar on Sunday to celebrate the 67th anniversary of the establishment of China-Pakistan Diplomatic Relations. (Xinhua/Ahmad Kamal)

Chinese artists perform during a concert to celebrate the 67th anniversary of the establishment of China-Pakistan Diplomatic Relations in northwest Pakistan's Peshawar, on May 13, 2018. A Chinese concert was held in Peshawar on Sunday to celebrate the 67th anniversary of the establishment of China-Pakistan Diplomatic Relations. (Xinhua/Umar Qayyum)

Chinese artists perform during a concert to celebrate the 67th anniversary of the establishment of China-Pakistan Diplomatic Relations in northwest Pakistan's Peshawar, on May 13, 2018. A Chinese concert was held in Peshawar on Sunday to celebrate the 67th anniversary of the establishment of China-Pakistan Diplomatic Relations. (Xinhua/Ahmad Kamal)