Alex had cultivated in small bursts throughout his time in the Hundred Blossom Valley, which he had to do to keep a handle on his Yin Qi that built up inside the dantian.
A day of Qi buildup would disappear in just a few minutes of cultivation, so it was easy enough for him to do it.
However, when he felt that he didn't need to do it all the time, he stopped towards the end of it. The few days he remained there hadn't been bothersome, but once he left, the build-up had reached a limit that he needed to go for a long cultivation period.
He could tell that he was also going to break through soon, so he decided to enter closed cultivation as soon as he could.
He told King Jin what he had to do before disappearing into his room and started cultivating. Immediately, a tremendous amount of Yang Qi gathered onto him, turning into the higher grade of Qi as they entered his dantian.
