goto guan map 1.
Search 4 byte for 1.
Go through portal
Search for 2.
Go back through portal to the guan town map 1
Search for 1.
Repeat until you narrow it down.
Also try scanning not changed sometimes instead of going through the portal.
You can assign short cuts in cheat engine options to make it easier so you don't have to keep alt-tabbing to cheat engine.
Suggest using next scan unchanged and next scan changed on hot keys :P.
Find what writes to the address.
Learn how to use cheat engine auto assembler to make a change to the code maybe.
:)