The intensifying US-China trade war has battered Hong Kong, prompting it to look to new markets and trade mechanisms such as those presented by the upcoming free-trade deal with Asean, the city’s commerce minister has told the Post.Edward Yau Tang-wah, secretary for commerce and economic development, said in an exclusive interview that the pact with the 10-member Association of Southeast Asian Nations would be a crucial alternative for Hong Kong companies that rely on traditional markets, such…