After entering the Hidden World, Ye Tianchen displayed immense power. Naturally, he didn't give the Indian Solomon's Pusuo Sect Leader any face, not because Ye Tianchen was arrogant, but because this Pusuo Sect Leader looked down on him from the start, hoping he would fail with his snide remarks. Ye Tianchen couldn't possibly show a pleasant face to such a person; there's no such logic or reason in this world!
Tianchen only acknowledges reason, not people. He is not a pushover, not anywhere. Whether facing those stronger or weaker than himself, Ye Tianchen treats them equally, resolutely refusing any coercion or incentives—even if it's the Heavenly King himself. That's Ye Tianchen's character.
