For the past two days, Xiao Jinghong had been hiding in Shu State Prefecture City, so Chen Yi naturally couldn't cultivate the Four Symbols Skill.
However, keeping the Black Tortoise Concealment Technique active allowed him to continuously absorb the Profound Mysteries of [Martial Arts·Body]. By integrating them, he enhanced his comprehension of his three major cultivation techniques: the Four Symbols Skill, the Black Tortoise Concealment Technique, and the Big Spear Pile Skill.
Specifically, the Black Tortoise Concealment Technique and the Four Symbols Skill had already reached the absolute peak of the Perfect Level. The effect of concealing his cultivation was even better. Although Chen Yi wasn't sure if it could withstand the prying eyes of someone like Immortal Bai, it should be enough to fool ordinary Upper Three Grades martial artists.
