While Ning Qing was worried on one end, Lu Ning was busy on the other end.
Lu Ning did not go to TO anymore and was focusing fully on finding Zhihan. He wouldn't die. She knew this in her heart.
As for why he didn't come back, Lu Ning thought of many possibilities. He was the gatekeeper of the IRS, so he must be very busy. Or maybe he lost his memory in the explosion and forgot that he had a wife. These were all possible reasons, so she had to find him.
She had a marriage certificate, she was his legitimate wife and need not answer to or be afraid of anyone.
Lu Ning went to Toho. This was a school for the gifted and was also Zhihan's alma mater. Back then, IRS had selected him from Toho to join them. She was sure IRS would continue to look for new elites at Toho.
IRS was too mysterious. She couldn't get in touch with it, so she decided to find clues from Taho in her search for Zhihan.
