BEIJING (Reuters) - A senior Chinese diplomat said on Friday China has made its best efforts to resolve issues on the Korean peninsula, ahead of U.S. President Donald Trump s state visit to Beijing next week when he is expected to press China to do more on North Korea. Vice Foreign Minister Zheng Zeguang said the North Korean nuclear issue would be an important topic up for discussion at the meeting between Chinese President Xi Jinping and Trump. China firmly opposes conflict on the Korean peninsula and believes using force is not the correct way to resolve the issue, Zheng told reporters at a briefing in Beijing. China and the United States have a shared interest in peace and stability on the Korean peninsula, Zheng said. 