Qin Wushuang's original aspiration was to find Xiao Guan. He had never held much objection to the Nine Raven Temple. After all, when dealing with sects, there would always be a few scummy people. The Nine Raven Temple had always had a good reputation, so Qin Wushuang never intended to get the Nine Raven Temple too involved.
Even if Xiao Guan had been murdered by Qi Yutang, he would not let out his anger on other people: he would only investigate the ones responsible. Qin Wushuang was seeking justice and figured that all involved in this matter should die!
This was Qin Wushuang's bottom-line and principle.
If he could not even protect his own family and friends, why should he train so hard to be superior?