Instructions
Plan your Chingling hunting adventure on a Thursday, as the little ringing creatures only appear on Thursdays.
Go to one of the spots where wild Chingling can be lured out. There are many locations where Chingling live, including Slowpoke Well, Mt. Moon, Victory Road, Diglett's Cave and the Seafoam Islands.
Walk around these areas with the "Sinnoh Sound" music playing over the in-game radio. This music only plays on Thursdays. Walk around these areas with the music playing and you will start to encounter wild Chinglings. Approximately 20 percent of the Pokemon you find in these areas while playing the "Sinnoh Sound" theme on a Thursday will be Chinglings.
Battle the Chingling until it is weak. Select a Pokeball from the item menu to capture Chingling.