Asian markets tumbled on Monday after US President Donald Trump escalated tensions with China, threatening last week to impose 100% tariffs on Chinese goods.Hong Kong’s HSI traded at 25,374, down 916 points or 3.49%. Shanghai and Shenzhen also dipped 1.3% and 2.56% respectively. Japan’s Nikkei also traded in red, reaching 48,088, shedding 491 points or 1.01%. Kospi, too followed the downward trajectoy, falling 1.66 points to 3,550 at 10:30 AM IST.Trump had posted on social media on Friday that he would levy an additional 100% tariff on China and warned he might cancel a summit with Xi. He cited Beijing’s export restrictions on rare earth minerals, which are used in smartphones, electric vehicles, and military hardware.The new US…