The spy he had sent out was Hei Huang's disciple.
The guy had already been one of his men before he was accepted by Hei Huang as a disciple. He had done the man a great favor, erasing the man's past and reshaping his life, before he sent the fellow to Hei Huang.
However, he certainly wouldn't publicize the matter in front of that many people. He could reach out to the spy in secret.
Shen Huang immediately split some of his consciousness and contacted said disciple with special code, all to be briefed about the situation.
Meanwhile, he sent out invitations to a few of Hei Huang's disciples on the Astral Nexus with his Celestial State expert permissions.
One of the disciples accepted his invitation.
Shen Huang quickly explained what had happened and asked the lad to check his master.
"My master's fine. There's no need to worry about him, senior Shen Huang," the disciple quickly replied.