栏目简介：Beijing expressed its opposition to Pyongyang's use of ballistic missile technology in violation of UN Security Council resolutions on Friday, calling for restraint from all relevant partiesLu said the parties concerned should learn from experience in reaching the agreement, which includes holding that the core of the Korean Peninsula nuclear issue is over security issues, the key lies with the United States and the DPRK, and concerns of all parties should be resolved in a balanced way