US President Donald Trump said Wednesday theres "a good chance" that North Korean leader Kim Jong Un will "do what is right for his people and for humanity" and make moves toward peace. In a pair of morning tweets, Trump said he received a message from Chinese President Xi Jinping that a meeting Xi had with Kim this week "went very well." On his first trip abroad since taking power, Kim and his wife were greeted by an honour guard and a banquet hosted by Xi, according to state media, which confirmed the "unofficial" visit on Wednesday only after Kim had returned by train to North Korea. Trump said that according to Xi, the North Korean leader "looks forward" to meeting the American president. The White House has said Trump plans to meet Kim by May amid nuclear tensions between the two nations. Trump has agreed to historic talks after South Korean officials relayed that Kim was committed to ridding the Korean Peninsula of nuclear weapons and was willing to halt nuclear and missile tests. In the meanwhile, Trump said, "unfortunately, maximum sanctions and pressure must be maintained at all cost!" The Trump administration has slapped sanctions on companies across the globe to punish illicit trade with North Korea. "For years and through many administrations, everyone said that peace and the denuclearization of the Korean Peninsula was not even a small possibility," Trump tweeted Wednesday. "Now there is a good chance that Kim Jong Un will do what is right for his people and for humanity. Look forward to our meeting!"