A real estate investor who abruptly backed out of a contract to buy a home overlooking the Strait of Georgia and refused to pay a $300,000 deposit is now on the hook for nearly $1 million, with no property to show for it. Na Cao walked away from the deal she'd signed in November 2016 to buy 917 Pacific Dr. in Tsawwassen, B.C., for $4.45 million, after friends suggested she was overpaying, according to a recent B.C. Supreme Court decision. She and her husband, Xin Qiang Li, both ignored warnings