awakening in a white sky with woodgrain patterns and blurry figures

At the hour of Yin, I opened my eyes and saw the white sky, and also the wooden grain patterns slowly drifting away from me, as if falling from a great height, as if slowly descending into the abyss, there were people in blue and white clothes talking to me, but I couldn't hear them clearly, then I continued to fall. Suddenly, there were gray shadows talking to me, but I couldn't see or hear them.