The Red-haired Ancestor's cave abode had two locations.
His original cultivation spot was at Tu Cui Peak, right across from Lush Peach Mountain, which stretched eight hundred li. The mountain was filled with peach trees that bore fruit every year, and without anyone to pick them, they fell and decomposed into the soil. Over millions of years, this accumulation had fermented into a deadly poison mist.
It was there that Ling Xuehong was poisoned and nearly died. Bai Guyi exhausted all elixirs to no avail.
Luckily, the Red-haired Ancestor had always harbored intentions toward the Peach Blossom Miasma and had prepared the antidote elixir, the thousand-year-old Reng He, in advance, saving her. Later, he spent a great deal of effort to collect the miasma and refined it into a magical treasure.
Later, he opened another cave abode on the Heavenly Dog Cliff at Red Wood Ridge.