Actually, when Yan Yue learned that Shangguan Linlang had left Demon City and entered the Two Realms Passage, he did harbor some suspicions, but at the time he overlooked some details. In retrospect, the Shangguan Clan probably started their counterattack from that moment.
However, due to irreconcilable conflicts within the Shangguan Clan, and because Shangguan Qingtian and Shangguan Haotian never showed up when Shangguan Linlang was attacked by the Heavenly Dao, even Shangguan Qingchen did not appear promptly—and let alone Shangguan Zifeng, who had been missing for ages.
But today, after Shangguan Zifeng had bested the group from the Eastern Celestial Court, he forcefully found a place to settle down and again asked him to help find Meng Fang, claiming it was Shangguan Linlang's request. Even if Yan Yue were foolish, he couldn't possibly fail to notice anything.
