Patrick Frater Asia Bureau Chief“Emergency Declaration,” a timely Korean-made action thriller, flew to an opening weekend of $6.5 million. But it was old-fashioned naval actioner “Hansan: Rising Dragon” that stayed afloat at the top of the South Korean box office for a second week.“Hansan,” a sequel to a 2014 record breaker, earned $9.18 million from over 1,600 screens, according to data from Kobis, the tracking service operated by the Korean Film Council (Kofic).