How do you get a seven gym leader in Pokemon liquid crystal?

In Pokémon Liquid Crystal, to challenge the seventh Gym Leader, you must first defeat the previous six Gym Leaders in the Johto region. After obtaining the Zephyr Badge, Hive Badge, Plain Badge, Fog Badge, Storm Badge, and Mineral Badge, you can access the Mahogany Town Gym, where the seventh Gym Leader, Pryce, awaits. Make sure to have a well-rounded team to counter his Ice-type Pokémon effectively. Once you defeat Pryce, you'll earn the Glacier Badge.