While Jiang Chen didn't know the exact reasons, what he had learned was enough to let him know that wandering cultivators from the Eastern Sea were not very welcoming to people from the Jiang Family.
Thus, of course, Jiang Chen would not use his real name while wandering around the Eastern Sea. After all, wasn't that just asking for trouble?
That wandering cultivators of the Eastern Sea did not welcome people from the Jiang Family was a fact almost everyone with some background knowledge knew.
Why did the East Sea Dragon King give Jiang Chen a token? It meant that he should stay in the sea and avoid hopping around on the sea's surface, so as not to be discovered by the people of the Chan Teaching, which would only cause trouble.
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"So it turns out that fellow Daoist's name is Jiang Chen, Yunyang greets you, Daoist Jiang Chen." After learning of Jiang Chen's background, Yunyang moved forward to greet him.
