A Hong Kong man on trial for allegedly murdering his live-in girlfriend four years ago has said he thought she was an alien because she did not bear his child.A High Court jury of four men and three women heard on Thursday that Tang Lung-fai, 56, admitted causing the death of Fok Sin-yee, 38, during a scuffle at their home in Mui Tsz Lam village, Ma On Shan, on or about April 14, 2022.But the defendant, who ran a private campsite near his home, denied intending to kill his partner or cause her...