China had pushed forward a joint statement by the leaders of the five nuclear weapon states on preventing nuclear war and avoiding arms races issued on Monday by urging the others to join the reaffirmation that a nuclear war cannot be won and shall not be fought, after the process under the framework of the Non-Proliferation Treaty (NPT) remained in a state of inaction for a couple of years and despite resistance from the former Trump administration, a senior Chinese diplomat said on Tuesday.