The remarks came as rhetoric and even personal name-calling has flared up in recent days between Washington and PyongyangHe said Japan is willing to push forward denuclearization on the peninsula with China and other partiesE世博平台esball"We hope Japan will behave with caution and play a constructive role on the peninsula nuclear issue, rather than the opposite," he saidAccording to Wang, China is always a force for peace and has made unremitting efforts toward the peaceful settlement of the peninsula nuclear issueThe "Four Nos" refer to Washington's promise not to seek a regime change in Pyongyang, not to seek the collapse of the DPRK government, not to seek acceleration of reunification of the Korean Peninsula, and not to send its military north of the 38th parallel, which acts as the boundary between Pyongyang and SeoulE世博平台esballWang also met with his Japanese counterpart, Taro Kono, on Thursday in New York