After leaving the Red River Basin, you followed YinTsumo quietly into the forests to practice the Skyden kungfu skills. YinTsumo knew a lot, and he was both a teacher and a friend to you. The two of you talked about the old days while practicing kunfu and developing the Chi. All kinds of things.
It turns out that YinTsumo was separated from his parents when he was young, and he and his sister Yinxin were dependent on each other. The two of them were on the verge of death several times during the war. Fortunately, they met the young man YinZang that year, rescued them from the war, and introduced them to Master Meiyin.
The Skyden sect keeps a low profile and has lived a life of not caring about worldly affairs since ancient times, only pursuing the path of immortality. YinZang is active by nature and loves to make friends, which is quite inconsistent with the styles of his fellow disciples in the Skyden sect. It was not easy for him to win over his new junior brother and younger sister. Not only did they teach each other, the three of them became inseparable friends and talked about everything.
Master Meiyin passed on all he learned decades ago, and then followed the practice of Skyden Sect to go alone to pursue the "Skylight prism" held every sixteen years.
YinTsumo and the other three then lived together. Many years later, YinTsumo and YinZang each had their own understanding of the "Skylight prism", and they stayed secluded one after another, guarded by the guardian of Yinxin. YinTsumo succeeded in seclusion for seven years, and then he left the seclusion. Unexpectedly, Yinxin had already left. When he visited YinZang's seclusion, the building was empty.
After YinTsumo inquired from many sources, he found out that YinZang was released from seclusion in just one year, and then abandoned his righteous path, joined the Skydow Crusade, got involved in the world, and even got the title of YinShar. Later, YinShar disappeared during the event of living-dead elixir, so Yinxin left his brother in seclusion and went into the world to look after the Skydow hero.
After escaping from the cult, Order of Seventh Moon, YinTsumo secretly thought that since Yinxin could not be forced to leave the cult, uncovering the true face of Order of Seventh Moon's leader would be the key to solving all the problems.
The Skyden clan circulates an ancient bronze mirror. It is said that during a skylight prism convergence, it was shining where the prisms converged. It can illuminate demons and ward off evil spirits, and has the power to save the world. Perhaps this mirror can unlock the secrets of the mystery leader of Seventh Moon. However, this mirror is hidden on the top of Fengyue Pagoda. Although the royal family knows nothing about the existence of this mirror, Dungas, where Fengyue Pagoda is located, is a rich sunlit land and is heavily guarded by the empire.
One is a former close friend, and the other is a sibling. You know that YinTsumo will never give up on pursuing the truth behind the cult of Seventh Moon no matter what, so you decide to take risks with him to obtain this ancient mirror.