"Bei, do you know? My grandpa once said that there is a kind of bird in heaven. They always love each other if they are of the same sex. If they fall in love with opposite sex, they are aliens!" Lu Xu raised the corner of his mouth happily, pinched Chen Bei's chin with his left hand, put his right hand together with Chen Bei, and said with a smile: "I knew when I first met you that you are the bird of paradise that I love."