Sun Wukong's purpose was very clear, his visit was to check on the Three-Life Stone, not to demonstrate his martial prowess.
Therefore, he did not tangle with Guang Chengzi. After temporarily holding him off with arrow techniques, he continued toward the River of Forgetfulness.
Moreover, if they really fought, his chances of winning were not great.
Although the sixth realm of archery laws was at the mid-stage Quasi-Saint level in terms of Daoist realm, just a step away from the late-stage Quasi-Saint.
But he was still a Daluo Golden Immortal, and even if the power of his archery reached the Quasi-Saint level, he had no chance to defeat Guang Chengzi, who was at the Quasi-Saint Realm.
"Hmm, compared to these long-cultivating powerful beings, Old Sun is still too young," Sun Wukong knew where he was lacking. If he had more time, he wouldn't consider these hypocrites of Chan Teaching worth noticing.