整理：昨日今晨重要新闻汇总（6月29日）

Domestic News - The Chinese government ordered Hikvision's Canadian operations to close, with the embassy in Canada asserting the protection of Chinese companies' legitimate rights and interests [1] - The Ministry of Commerce responded to the US and relevant countries' tariff negotiations, firmly opposing any party sacrificing China's interests for the sake of achieving a deal for tariff reductions [1] International News - Canada imposed a 50% tariff on steel imports exceeding quotas, while Japan and the US engaged in the seventh round of ministerial talks regarding Trump's high tariff policies [2] - The situation in the Middle East saw Trump suggesting a ceasefire in Gaza might be "close" to being achieved within a week, while denying plans to provide Iran with $30 billion for non-military nuclear facilities [2]