Zhaojin Mining Co. Ltd. (1818.HK) tumbled 8% during regular trading to HK$16.67 with turnover exceeding HK$372 million. Spot gold prices broke through the $4,000 mark, falling to a low of $3,977.21, touching an eight-month low. Hong Kong gold mining stocks were broadly pressured, with China Gold International dropping more than 9%, Shandong Gold and Lingbao Gold each declining over 8%, and Zijin Mining falling more than 6%.