I left the Pokemon Tower since I couldn't climb it with all the ghost roaming around that I couldn't yet identify. I had to get the Silph Scope item first in order to see the ghosts' true form so I wandered west to Route 8. I battled wild Pokemon in the tall grass after using Cut to cut down a tree, then I battled trainers in the area as well. I headed further west until I arrived at the Saffron City gatehouse, but I didn't go inside since I knew that I couldn't pass through there yet. Instead I entered the Underground Path and went under the city and arrived at Route 8 next. I battled more wild Pokemon, then I arrived in Celadon City. After healing my Pokemon, I visited the Celadon Mansion and I picked up the Tea key item there.