From Lavender Town, there is an underground tunnel to Celadon. To get to Saffron from Celadon, you have to get water from the vending machines in the rooftop square in the Poke Mart in Celadon and then give the guard a drink.
celadon city
clear out the rockets in celadon city
In Celadon City you need to go into the Celadon Mansion (Front Door) and talk to the little old lady babysitting the Pokemon. She will give you the tea.
its in celadon city
you go to celadon city
Celadon City
At celadon city.
No, there is not a PC in the Celadon Gym. However, there is a PC in the Pokemon Center in the farthest north-east corner of Celadon City.
in celadon city
celadon city
You have to get the tea from the old lady in celadon mansion. She is on the first floor, next to some pokemon.
Defeat the celadon city gym leader.