A personalised car number plate featuring the letter “H” has fetched HK$20 million (US$2.55 million) at a government auction, the fourth-most-expensive one sold in Hong Kong at 4,000 times its reserve price.Other high bids at Sunday’s Chinese New Year auction of vehicle registration marks included the plates “30” at HK$4.55 million, “101” at HK$1.01 million and “2288” at HK$470,000.The single-letter H plate drew the top bid among the 49 plates sold, going to a man who outbid three rivals in a...