Wang Yan was jealous because Zhang Jian had not returned home straight after his grocery run but had gone to Mount Xiaobei to see Lin Xi before returning.
Zhang Jian still remembered how she had fought Lin Xi the last time she had visited them. He thought that Wang Yan was still fighting Lin Xi like girls often did and decided that not answering her question was the best method. He didn't want to give wind to the fire burning in her heart against Lin Xi.
Instead, he wanted the both of them to get along well together since both of them were good and unfortunate girls. He thought that the two could support each other as their circumstances were similar.
He ignored her question and let her simmer in anger for a while. He turned towards the Black Phoenix King and immediately a pitiful look appeared on his face. His pitiful expression was in fact hiding his laughter that came with the sight of the now bald Black Phoenix.