"Eldest brother, do you know if there is anything interesting in the other four cities?!"
Zhang Xinyi cheerfully questioned.
Du Gang got her point but didn't answer directly, "Surely there is, we have so many things to eat here, the other four shouldn't be disappointing either..."
The reason he didn't stay in the City of Heaven was that he was looking for a place!
A wall where Monk Xuanzang and his master had a chat in the city, in the Journey to the West: Conquering the Demons!
That place must be a story convergence point. Once he found it, he would be able to locate Friar Sand, Pigsy, and Sun Wukong.
Of course, even if he couldn't find it, it wasn't a big deal; he wouldn't lose anything and would consider the storyline different. But if he did find it, then he would have a head start, gathering plenty of intelligence for greater benefit.
So, the group of four kept wandering between the other four cities non-stop.
Eventually, Du Gang settled in Potian City.