The Altar of Wanfa Sect at Dragon Tiger Mountain's Celestial Master Mansion is indeed the key to refining the Netherworld Divine Tree Branch.
However, the Mount Shu Sect of the Great Tang has the Purple Azure Twin Swords, Qingxiao Manor, the North Abyss Divine Spear, and the South Bright Separation Fire Cauldron.
If they can obtain some or even all of these treasures, the gains for Inner Mount Shu Sect in the Netherworld would be undoubtedly greater.
When others attack the Great Tang's Mount Shu, these treasures can play a huge role in defending against enemies.
But when facing the Inner Mount Shu Sect Leader Ji Yao, who has cultivated Divine Clarity Qi, it's another matter.
However, entering the Great Tang Mortal Realm is not easy.
The Celestial Master Mansion has four members who have reached Mahayana, but they might not all be there year-round.
Besides, the Great Tang Mortal Realm also has Empress Zhang Wantong.
