Bai Zepei knew he shouldn't feel this way, but he sensed something was wrong with himself, yet he couldn't control his own thoughts and emotions.
He was the smartest person in the Bai Family and, although no one else thought there was anything amiss with his sister, he had still noticed the change in her. He couldn't remember when the change started—perhaps it was after she had hurt her head in the Mountain Village.
His intelligence and keen senses had made him realize that his sister was no longer the same person. If not for their identical appearance and birthmarks, he might have even thought she was an imposter. Yet in the end, he discovered that on the surface she was still his sister, but inside she was completely different.
He had once asked Ruozhu if she had any regrets, recalling her bewildered expression, devoid of much sorrow. At first, it puzzled him, but later he found the whole thing laughable. She wasn't his sister, so how could she have any regrets?