Atrial Septal Defect

When Ling Ran received the treasure chest, he immediately opened it.

A neither thick nor thin shining blue book emerged in the air. It had a faint halo around it.

Due to the semi-transparent effect from the system, Ling Ran could see the expressions on the other people's faces. He could see the flashing red light on their phone cameras, as well as the greedy looks and idolizing gazes.

Ling Ran did not hesitate, care, or pay heed to those things. Like a fool, he waved his hands in the air and opened the shining blue book.

[Atrial Septal Defect Closure (Perfect Level)]. Those huge words appeared in front of Ling Ran's eyes immediately.

Ling Ran could not help but nodded slightly.

Atrial septal defect was a common congenital heart disease, and atrial septal defect closure was one of the common treatment options.