The regime was also angered by last week's UN decision to increase economic sanctions against it.
Mr Xi also stressed China and the US shared "common interests" over denuclearisation and maintaining peace on the Korean peninsula.
From 'fire and fury' to 'locked and loaded'The US president warns that military solutions are "locked and loaded" should North Korea "act unwisely".
But he added: "Hopefully, it will all work out. Nobody loves a peaceful solution better than President Trump, that I can tell you."
Russia said the exchange of threats between Washington and North Korea worried Moscow "very much". Germany has also expressed alarm.
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