In the middle stage of the Aperture Tempering Realm, there was a sign of acupoint synergy, indicating an imminent breakthrough into the late Aperture Tempering Realm. Even though Chi Shuqing's own cultivation level was not high, she had some knowledge.
However, Chen Fei's rate of cultivation growth seemed a bit exaggerated.
From breaking through the early Aperture Tempering Realm to now, it hadn't even been four years. Four years might be considered a long time for ordinary people, and for martial cultivators in the Body Tempering Realm, it could allow for further progress.
But for those in the Aperture Tempering Realm, four years of time was probably just enough for those in the early stage to stabilize their cultivation. If the cultivation went smoothly, they might be able to open two or three acupoints, which would already be considered excellent talent.