Will Trump's tariff plan backfire?

①Donald Trump says he will hit China, Canada and Mexico with new tariffs. Could the tariffs backfire? (00:43) ②Chinese President Xi Jinping has met with Senior Minister of Singapore Lee Hsien Loong in Beijing. What key issues have been discussed? (13:27) ③The second China International Supply Chain Expo is underway in Beijing. What are the major highlights of this year's event? (24:34) ④Huawei has launched its latest Mate 70 series with the company's own HarmonyOS Next operating system. (35:06) ⑤What's driving China's soaring low-altitude economy? (42:39)