Infinite Evolved Territory

This is a world of national lords, as long as the opportunity is right, undying and imperishable is not a Dream！
Zhou Yan had unexpectedly transmigrated into this magical world. 
He woke up in a world very much similar to modern Earth but the difference was this world had magical abilities. 
When people turned 18 they would awaken a mysterious ability called an Overlord Space.
 Those who fail to awaken this ability would always remain at the lowest status and be exploited by the wealthy.
Zhou Yan was looking forward to awakening his Overlord Space. 
When the day finally came he was surprised to find that he had awakened more than one Overlord Space. 
He decided to conceal this fact fearing it might bring him to harm if people knew about it. 
But the question remains. 
Why does he have a second Overlord Space and why does it look different from all the known ones?