The reason behind closing windows and curtains was because there was a huge secret Liu Yang was hiding and nobody knew about it and he didn't want anyone to find out about his secret.
Because if anyone were to see what he is doing then they would be shocked. Because Liu Yang was not a person from this world. He was from a similar place but there was no cultivation and the world's strongest power was science.
When Liu Yang was born he was shocked to find himself held by a huge man. Because when Liu Yang was born he immediately understood that he was reincarnated. But when he tried to see or hear he couldn't do anything.
So after being born for half an hour he couldn't hear or see anything so he thought he was born blind and deaf. He was unhappy about the situation he hoped that at least he was able to hear or see.
As he was blaming his bad luck he immediately saw light rushing and before he could do anything he immediately screamed in pain. But as he was still a baby his scream turned into crying.
As he calmed down he was shocked because he thought he heard the sound of the wind. He thought that he was hallucinating so he focused and he still heard the sound of the wind.
He could at least hear things. He was so focused that he forgot that he had closed his eyes when he was in pain. So afterwards when he relaxed he realised that his eyes were closed. So if he can hear then he can try to check if he can see.
So he slowly started to open his eyes and when they were fully opened he was shocked to find that he was held by huge hands and he was shocked but he understood that he was still a baby so that's why that hand that was holding him was huge.
The hands that were holding were none other than his father's hand. Even though he later found out that his father was holding him.
Later when he grew up he found out that there was an incident before for the first time he saw his father. Later he asked what happened on the day he was born his father was shocked because he didn't expect Liu Yang would be able to remember the day he was born.
His father immediately asked him if he knew anything else about that day. Liu Yang didn't know anything else and later his father told him to never ask about that day again. Liu Chen thought that Liu Yang would ask again but he didn't know Liu Yang was a reincarnated person so he was a mature man.
The reason for Liu Yang to ask about that day was because the first thing he saw after opening his was that there was water under his father's eye. Meaning that he saw his father crying for the first and last time.
Later as he grew he started to understand his father and he also found that his father never smiled. But his father cared for him very much even when his father found out that Liu Yang's talent was the worst he didn't say anything and told Liu Yang to work hard and he doesn't need to worry about the talent.
Liu Chen taught him everything about the cultivation. Even though Liu Yang didn't have talent he still tried to understand everything. After that his father also taught him everything about the clan. He also called the clan leader who was Liu Yang uncle to teach about the workings of the clan.
While doing this he also found out that his father was a lot stronger than the clan leader and he was working for someone else that's why he didn't have any intention of becoming the clan leader.
He also learned about the cultivation realms and the grades of the constellation and how the grade of the talent is determined.
Cultivation realms start from the body tempering realm because the cultivator needs to have a strong body before awakening the constellations or Stars.
It is said that if a person has a strong body before the awakening then there is a chance that the person can awaken a higher grade of the constellations or Stars.
The main cultivation realms start from Astral Disciple, Master, Grand Master, half-Saint, Saint, Marshal, King, Emperor and lastly the Sage Realm. They are also divided into nine minor realms.
At first Liu Yang was shocked to find that there were this many realms of cultivation and his father also informed him that there are more cultivation realms but no one knows the name of the realms above the Sage Realm.
After that he also learned that the clan leader was at Stage Five of the Astral Grand Master Realm. When his Clan leader told his cultivation he thought that Liu Yang would be shocked and in awe. But Liu Yang didn't have any reaction and it looked like he was feeling that Clan leader was very weak.
At first the clan leader was very angry at first but he explained that the last cultivator he saw at half Saint realm was more than fifty years ago. So his cultivation realm is not as low as compared to others.
He can content other clans leaders and even defeat them. Now Liu Yang understood that it was a lot harder to increase the cultivation realm. So on this day he decided that even though he didn't have the talent to go further, whenever he got the chance he would try to reach the peak. He didn't know when he was thinking about this his father was looking at the sparkle in his eyes.
So his father brought him the star awakening pill and that's why Liu Yang didn't hesitated and immediately prepared to use the pill after closing himself in the room.