Hong Kong

Hong Kong is the setting of the first movie of Cardcaptor Sakura takes place and where the Li family comes from.

Residents
In the first movie, it was revealed that Madoushi was trapped in the Water Dimension in Hong Kong for many years as a result of a duel with Clow Reed.

In Tsubasa: Reservoir Chronicle, an alternate version of Syaoran Li lives in Hong Kong.

In the anime, Meiling Li returns to Hong Kong in the second season because of a call from her mother.

Trivia

 * It is hinted that Clow Reed and Kero lived in Hong Kong for a while.
 * The Clow Cards were created here.
 * Syaoran Li was going to return to Hong Kong in the start of the third season of the anime but postponed his trip back because of his jealousy towards Eriol. In the manga, it was because he knew that there was still danger in Tomoeda.