Han Sen was frozen as he watched Elysian Moon and Gu Qingcheng's bodies becoming one. The process was pretty much like how Han Sen could combine himself with Little Angel.
But when Han Sen combined with Little Angel, Han Sen's body was the primary controller. Little Angel was secondary.
Elysian Moon and Gu Qingcheng were equals. They completed each other.
Before, whenever Han Sen looked at Gu Qingcheng and Elysian Moon, he had always thought they were so pretty that any man could fall for them. Even Han Sen caught himself watching them, now and again. After all, everyone liked to admire pretty women.
When Gu Qingcheng and Elysian Moon completed themselves, Han Sen no longer felt as if he was looking at a human. The beauty of the being that emerged was unearthly. A sword fairy stood in front of him; she was so pretty that she no longer looked like something that belonged in this world.