The main reason why Zhao Hai didn't want to reveal his identity was that he had another enemy besides Lu Wei and ghost emperor Yin wind. This enemy was even more powerful and terrifying than Lu Wei and ghost emperor Yin wind. It was the myriad treasure Pavilion.
Zhao Hai already knew Lu Wei's background. He was an elder of the five uniques sect, but this elder did not necessarily have much power. After Zhao Hai came to the array world, he found out that there would be many elders in the first big sect. Lu Wei might just be an ordinary elder in the five uniques sect.
As for why Lu Wei might be an ordinary elder with no real power, but he had the ability to collect the power of faith in the lower realm, this was also very easy to explain. Because almost all people who could do this would hide this secret, even the people closest to them would not say it.
