Seven Tribulations. Metal, Wood, Water, Fire, Earth, Yin, and Yang.
They were actually tribulations that were categorized into the seven attributes which were known to men. In truth, it was nature's final method of cleaning up the cultivators.
Lu Sheng knew full well that this world's cultivators opposed the will of the heavens. They robbed the world of its Spiritual Essence and fortune to enrich themselves.
That was why they were subjected to such tribulations. This was nature and the universe's way of preventing cultivators' attempts to achieve the Nascent Soul tier and become accomplished in their cultivation bases.
The black flames continued burning.
Lu Sheng spread his arms beside him, and spread out the Nascent Soul which had just taken form inside him. A huge volume of Nascent Qi brought with it extreme cold as it instantly suppressed the black flames in all directions.