"And it hits Zhang Chengling at one point, even if he already knew it, that he is an orphan with no family who would care for him. He finally realises and as soon as that happens, longing starts. He longs for family, for someone who will be there for him, who will help him with his struggles. But he doesn't have that, not anymore." Or 5 times Zhang Chengling wishes he had a family and the one time he realises he actually does. (Originally posted on ao3)