Yunzi

Yunzi (Traditional: 雲子; Simplified: 云子; Pinyin: Yúnzǐ; IPA [yn˧˥tsz̩˨˩˦]) refer to special weiqi (Go) pieces (called "stones") manufactured in the Chinese province of Yunnan.

Among yunzi, most famous was the yongzi (永子) manufactured by Yongchang Fu (永昌府, today the city of Baoshan, Yunnan) during the Ming dynasty.

that after a fire broke out in an imperial treasury, one of the keepers, who was from Yongchang Fu, discovered that melted pearls and jade had a special luster.

Today in Baoshan there are still people who have antiques dating from the Ming dynasty; among those there remain one and a half original yongzi sets.

The company creates the yunzi in an old factory that was used by the American Flying Tigers as barracks during World War II.

[1] Like other types of Go stones, yunzi are washed and dried using a gentle soap solution to remove any dust from the packaging/manufacturing process.