Chen Miao did not test this state in the underground palace. Instead, after leaving the Mortal World, he tried out his newly acquired state in reality. Yin concealment was the method the human-headed snake had used to hide its own yin energy.
After he activated yin concealment, a thin membrane appeared over the nine apertures inside his body. This was the barrier described by yin concealment.
The yin energy entering and leaving the corresponding apertures was also enveloped by this barrier. The enveloped yin energy continued to circulate normally within Chen Miao's body, but once it left his body, the barrier disappeared.
In other words, Chen Miao could only conceal the fluctuations of yin energy within his body, allowing him to pass himself off as an ordinary person.
But if he used mystic arts or anything else that sent yin energy outside his body, he would be exposed.
This left Chen Miao deep in thought.
In fact, when he discovered the human-headed snake's ability, he had immediately thought of his current predicament.
If he could use yin energy without being detected, it would certainly resolve his awkward situation in the Paper Effigy Underground Palace, and even solve many problems in the Mortal World. But yin concealment only hid the yin energy inside his body, which fell somewhat short of what he had envisioned.
"Do I really have to risk opening a mirror in the underground palace and see whether Kong Xunzhen reacts?"
Chen Miao had reservations about opening a passage into the Mirror Space directly inside the underground palace.
But if he did not leave the Paper Effigy Underground Palace, he would have to endure being allowed out only once a month.
And that situation might last three to five months, until he learned to make paper offerings at the